Hemant's Oracle DBA Blog: 2025

06 July, 2025

Converting a "NO Standby" to "YES Standby" database

In my previous blog post and video, I had demonstrated creating a PDB (as a clone from an existing PDB) to be used for some testing/validation for a short period of time, without needing protection of a Standby database.

But what if you do decide to provide Standby protection ?

First, here's the status of the Pluggable Database at the Primary :

SQL> select con_id, pdb_name, creation_time, force_logging
  2  from cdb_pdbs
  3  where pdb_name = 'PRDAPPTST'
  4  /

    CON_ID PDB_NAME     CREATION_ FORCE_LOGGING
---------- ------------ --------- ---------------------------------------
         4 PRDAPPTST    29-JUN-25 NO

SQL>
SQL> select force_logging from v$database;

FORCE_LOGGING
---------------------------------------
YES

SQL>
SQL> alter pluggable database prdapptst enable force logging;

Pluggable database altered.

SQL>
SQL> select con_id, pdb_name, creation_time, force_logging
  2  from cdb_pdbs
  3  where pdb_name = 'PRDAPPTST'
  4  /

    CON_ID PDB_NAME     CREATION_ FORCE_LOGGING
---------- ------------ --------- ---------------------------------------
         4 PRDAPPTST    29-JUN-25 YES

SQL>

Note :In this case, the "ENABLE FORCE LOGGING" was strictly not required because the CDB-wide FORCE LOGGING was already enforced (query on V$DATABASE at the CDB$ROOT).

Here's the status at the Standby :

SQL> l
  1  select con_id, name, open_mode, recovery_status
  2  from v$pdbs
  3* where name ='PRDAPPTST'
SQL> /

    CON_ID NAME         OPEN_MODE  RECOVERY
---------- ------------ ---------- --------
         4 PRDAPPTST    MOUNTED    DISABLED

SQL>
SQL> l
  1  select con_id, file#, status, plugged_in, name
  2  from v$datafile
  3  where con_id=4
  4* order by file#
SQL> /

    CON_ID      FILE# STATUS  PLUGGED_IN NAME
---------- ---------- ------- ---------- --------------------------------
         4         60 SYSOFF           0 /u01/app/oracle/product/19.0.0/d
                                         bhome_1/dbs/UNNAMED00060

         4         61 RECOVER          0 /u01/app/oracle/product/19.0.0/d
                                         bhome_1/dbs/UNNAMED00061

         4         62 RECOVER          0 /u01/app/oracle/product/19.0.0/d
                                         bhome_1/dbs/UNNAMED00062

         4         63 RECOVER          0 /u01/app/oracle/product/19.0.0/d
                                         bhome_1/dbs/UNNAMED00063

         4         64 RECOVER          0 /u01/app/oracle/product/19.0.0/d
                                         bhome_1/dbs/UNNAMED00064


SQL>

Meaning that although the Standby is "aware" of the PDB, not datafiles are present so it is not being recovered. If you recall from the Video demonstration, the alert log at the Standby presented these entries when the PDB was created at the Primary with STANDBYS=NONE :

Recovery created pluggable database PRDAPPTST
PRDAPPTST(4):Tablespace-SYSTEM during PDB create skipped since source is in              r/w mode or this is a refresh clone
PRDAPPTST(4):File #60 added to control file as 'UNNAMED00060'. Originally created as:
PRDAPPTST(4):'+DATA/RACDB/38AE431466FE1FDBE0635A38A8C085D8/DATAFILE/system.299.1205032267'
PRDAPPTST(4):because the pluggable database was created with nostandby
PRDAPPTST(4):or the tablespace belonging to the pluggable database is
PRDAPPTST(4):offline.
PRDAPPTST(4):Tablespace-SYSAUX during PDB create skipped since source is in              r/w mode or this is a refresh clone
PRDAPPTST(4):File #61 added to control file as 'UNNAMED00061'. Originally created as:
PRDAPPTST(4):'+DATA/RACDB/38AE431466FE1FDBE0635A38A8C085D8/DATAFILE/sysaux.280.1205032267'
PRDAPPTST(4):because the pluggable database was created with nostandby
PRDAPPTST(4):or the tablespace belonging to the pluggable database is
PRDAPPTST(4):offline.
PRDAPPTST(4):Tablespace-UNDOTBS1 during PDB create skipped since source is in              r/w mode or this is a refresh clone
PRDAPPTST(4):File #62 added to control file as 'UNNAMED00062'. Originally created as:
PRDAPPTST(4):'+DATA/RACDB/38AE431466FE1FDBE0635A38A8C085D8/DATAFILE/undotbs1.285.1205032267'
PRDAPPTST(4):because the pluggable database was created with nostandby
PRDAPPTST(4):or the tablespace belonging to the pluggable database is
PRDAPPTST(4):offline.
PRDAPPTST(4):Tablespace-TEMP during PDB create skipped since source is in              r/w mode or this is a refresh clone
PRDAPPTST(4):Tablespace-UNDO_2 during PDB create skipped since source is in              r/w mode or this is a refresh clone
PRDAPPTST(4):File #63 added to control file as 'UNNAMED00063'. Originally created as:
PRDAPPTST(4):'+DATA/RACDB/38AE431466FE1FDBE0635A38A8C085D8/DATAFILE/undo_2.284.1205032267'
PRDAPPTST(4):because the pluggable database was created with nostandby
PRDAPPTST(4):or the tablespace belonging to the pluggable database is
PRDAPPTST(4):offline.
PRDAPPTST(4):Tablespace-USERS during PDB create skipped since source is in              r/w mode or this is a refresh clone
PRDAPPTST(4):File #64 added to control file as 'UNNAMED00064'. Originally created as:
PRDAPPTST(4):'+DATA/RACDB/38AE431466FE1FDBE0635A38A8C085D8/DATAFILE/users.279.1205032267'
PRDAPPTST(4):because the pluggable database was created with nostandby
PRDAPPTST(4):or the tablespace belonging to the pluggable database is
PRDAPPTST(4):offline.

So, the current status is that the PDB *is* registered at the Standby but, in the absence of datafiles, no Redo Apply is being done at the Standby.

For the purposes of today's test, I created a few more rows in my target table in that PDB :

SQL> connect hemant/hemant@newtestpdb
Connected.
SQL> @INS_QRY

1 row created.

SQL> l
  1* insert into my_txn_table select systimestamp, substr(p.name,1,12), substr(i.host_name,1,12), 'XXX' from v$pdbs p, v$instance i
SQL> set pages600 linesize 132
SQL> select * from my_txn_table;

TXN_TIMESTAMP                                                               TARGET_PDB_NAME TARGET_HOST_NAM TXN_DETAILS
--------------------------------------------------------------------------- --------------- --------------- ---------------
29-JUN-25 03.06.43.264562 AM                                                PDB1            srv2            XXX
29-JUN-25 03.15.26.694170 AM                                                PRDAPPTST       srv1            XXX
06-JUL-25 08.31.33.903344 AM                                                PRDAPPTST       srv2            XXX
29-JUN-25 03.27.26.855776 AM                                                PRDAPPTST       srv2            XXX

SQL> select * from my_txn_table order by txn_timestamp;

TXN_TIMESTAMP                                                               TARGET_PDB_NAME TARGET_HOST_NAM TXN_DETAILS
--------------------------------------------------------------------------- --------------- --------------- ---------------
29-JUN-25 03.06.43.264562 AM                                                PDB1            srv2            XXX
29-JUN-25 03.15.26.694170 AM                                                PRDAPPTST       srv1            XXX
29-JUN-25 03.27.26.855776 AM                                                PRDAPPTST       srv2            XXX
06-JUL-25 08.31.33.903344 AM                                                PRDAPPTST       srv2            XXX

SQL> commit;

Commit complete.

SQL>  connect hemant/hemant@newtestpdb
Connected.
SQL> @INS_QRY

1 row created.

SQL> commit;

Commit complete.

SQL> connect hemant/hemant@newtestpdb
Connected.
SQL> @INS_QRY

1 row created.

SQL> commit;

Commit complete.

SQL> select * from my_txn_table order by txn_timestamp;

TXN_TIMESTAMP                                                               TARGET_PDB_NAME TARGET_HOST_NAM TXN_DETAILS
--------------------------------------------------------------------------- --------------- --------------- ---------------
29-JUN-25 03.06.43.264562 AM                                                PDB1            srv2            XXX
29-JUN-25 03.15.26.694170 AM                                                PRDAPPTST       srv1            XXX
29-JUN-25 03.27.26.855776 AM                                                PRDAPPTST       srv2            XXX
06-JUL-25 08.31.33.903344 AM                                                PRDAPPTST       srv2            XXX
06-JUL-25 08.32.29.154557 AM                                                PRDAPPTST       srv1            XXX
06-JUL-25 08.32.41.404084 AM                                                PRDAPPTST       srv2            XXX

6 rows selected.

SQL>

So, today, 06-Jul-25, I have created 3 new rows, with connections to both instances.

(To understand "newtestpdb" as the connect-string or service name for the PDB PRDAPPTST see the previous Blog Post or Video)

Now, I run a backup of this PDB at the Primary and will then copy it and restore it to the Standby.

[oracle@srv1 ~]$ rman target /

Recovery Manager: Release 19.0.0.0.0 - Production on Sun Jul 6 08:35:56 2025
Version 19.25.0.0.0

Copyright (c) 1982, 2019, Oracle and/or its affiliates.  All rights reserved.

connected to target database: RACDB (DBID=1162136313)

RMAN> backup as compressed backupset
backup as compressed backupset
2> pluggable database PRDAPPTST
pluggable database PRDAPPTST
3> format '/tmp/PRDAPPTST_DB_%U.bak';

And restore it at the Standby (after copying the backup pieces)

[oracle@stdby tmp]$ ls -ltr *bak
-rw-r-----. 1 oracle oinstall 849739776 Jul  6 08:38 PRDAPPTST_DB_ch3tsbcj_401_1_1.bak
[oracle@stdby tmp]$ rman target /

Recovery Manager: Release 19.0.0.0.0 - Production on Sun Jul 6 08:39:12 2025
Version 19.25.0.0.0

Copyright (c) 1982, 2019, Oracle and/or its affiliates.  All rights reserved.

connected to target database: RACDB (DBID=1162136313, not open)

RMAN> catalog start with '/tmp';
catalog start with '/tmp';
using target database control file instead of recovery catalog
searching for all files that match the pattern /tmp

List of Files Unknown to the Database
=====================================
File Name: /tmp/PRDAPPTST_DB_ch3tsbcj_401_1_1.bak

Do you really want to catalog the above files (enter YES or NO)? YES
cataloging files...
cataloging done

List of Cataloged Files
=======================
File Name: /tmp/PRDAPPTST_DB_ch3tsbcj_401_1_1.bak


RMAN>
RMAN> list backup of pluggable database PRDAPPTST;
list backup of pluggable database PRDAPPTST;

List of Backup Sets
===================


BS Key  Type LV Size       Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
319     Full    810.37M    DISK        00:00:43     06-JUL-25
        BP Key: 319   Status: AVAILABLE  Compressed: YES  Tag: TAG20250706T083635
        Piece Name: /tmp/PRDAPPTST_DB_ch3tsbcj_401_1_1.bak
  List of Datafiles in backup set 319
  Container ID: 4, PDB Name: PRDAPPTST
  File LV Type Ckp SCN    Ckp Time  Abs Fuz SCN Sparse Name
  ---- -- ---- ---------- --------- ----------- ------ ----
  60      Full 12491346   06-JUL-25              NO    /u01/app/oracle/product/19.0.0/dbhome_1/dbs/UNNAMED00060
  61      Full 12491346   06-JUL-25              NO    /u01/app/oracle/product/19.0.0/dbhome_1/dbs/UNNAMED00061
  62      Full 12491346   06-JUL-25              NO    /u01/app/oracle/product/19.0.0/dbhome_1/dbs/UNNAMED00062
  63      Full 12491346   06-JUL-25              NO    /u01/app/oracle/product/19.0.0/dbhome_1/dbs/UNNAMED00063
  64      Full 12491346   06-JUL-25              NO    /u01/app/oracle/product/19.0.0/dbhome_1/dbs/UNNAMED00064


RMAN>
RMAN> run
run
2> {
{
3> set newname for pluggable database PRDAPPTST to '/Standby_DB/oradata/STDBY/PRDAPPTST/%U.dbf';
set newname for pluggable database PRDAPPTST to '/Standby_DB/oradata/STDBY/PRDAPPTST/%U.dbf';
4> restore pluggable database PRDAPPTST;
restore pluggable database PRDAPPTST;
5> switch datafile all;
switch datafile all;
6> }

channel ORA_DISK_1: starting datafile backup set restore
channel ORA_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_DISK_1: restoring datafile 00060 to /Standby_DB/oradata/STDBY/PRDAPPTST/data_D-RACDB_TS-SYSTEM_FNO-60.dbf
channel ORA_DISK_1: restoring datafile 00061 to /Standby_DB/oradata/STDBY/PRDAPPTST/data_D-RACDB_TS-SYSAUX_FNO-61.dbf
channel ORA_DISK_1: restoring datafile 00062 to /Standby_DB/oradata/STDBY/PRDAPPTST/data_D-RACDB_TS-UNDOTBS1_FNO-62.dbf
channel ORA_DISK_1: restoring datafile 00063 to /Standby_DB/oradata/STDBY/PRDAPPTST/data_D-RACDB_TS-UNDO_2_FNO-63.dbf
channel ORA_DISK_1: restoring datafile 00064 to /Standby_DB/oradata/STDBY/PRDAPPTST/data_D-RACDB_TS-USERS_FNO-64.dbf
channel ORA_DISK_1: reading from backup piece /tmp/PRDAPPTST_DB_ch3tsbcj_401_1_1.bak
channel ORA_DISK_1: piece handle=/tmp/PRDAPPTST_DB_ch3tsbcj_401_1_1.bak tag=TAG20250706T083635
channel ORA_DISK_1: restored backup piece 1
channel ORA_DISK_1: restore complete, elapsed time: 00:00:45
Finished restore at 06-JUL-25

datafile 60 switched to datafile copy
input datafile copy RECID=54 STAMP=1205746519 file name=/Standby_DB/oradata/STDBY/PRDAPPTST/data_D-RACDB_TS-SYSTEM_FNO-60.dbf
datafile 61 switched to datafile copy
input datafile copy RECID=55 STAMP=1205746519 file name=/Standby_DB/oradata/STDBY/PRDAPPTST/data_D-RACDB_TS-SYSAUX_FNO-61.dbf
datafile 62 switched to datafile copy
input datafile copy RECID=56 STAMP=1205746519 file name=/Standby_DB/oradata/STDBY/PRDAPPTST/data_D-RACDB_TS-UNDOTBS1_FNO-62.dbf
datafile 63 switched to datafile copy
input datafile copy RECID=57 STAMP=1205746519 file name=/Standby_DB/oradata/STDBY/PRDAPPTST/data_D-RACDB_TS-UNDO_2_FNO-63.dbf
datafile 64 switched to datafile copy
input datafile copy RECID=58 STAMP=1205746519 file name=/Standby_DB/oradata/STDBY/PRDAPPTST/data_D-RACDB_TS-USERS_FNO-64.dbf


RMAN>

Note :If you see my previous blog posts and videos on RAC, you can see that I have demonstrated that

1. A RAC Primary can have a Non-RAC (Single Instance) Standby and vice-versa as well in my video demonstrations of DataGuard Switchover

2. A Primary on ASM can have a Standby on Filesystem and vice-versa

Now that I have restored the database to the Standby, I must ENABLE RECOVERY for this PDB

[oracle@srv1 ~]$ sqlplus / as sysdba

SQL*Plus: Release 19.0.0.0.0 - Production on Sun Jul 6 10:32:27 2025
Version 19.25.0.0.0

Copyright (c) 1982, 2024, Oracle.  All rights reserved.


Connected to:
Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Version 19.25.0.0.0

SQL> alter pluggable database prdapptst enable recovery;
alter pluggable database prdapptst enable recovery
*
ERROR at line 1:
ORA-65046: operation not allowed from outside a pluggable database


SQL> alter session set container=PRDAPPTST;

Session altered.

SQL> alter pluggable database prdapptst enable recovery;

Pluggable database altered.

SQL> connect hemant/hemant@newtestpdb
Connected.
SQL> @INS_QRY

1 row created.

SQL> set pages600 linesize 132
SQL> commit;

Commit complete.

SQL> select * from my_txn_table order by 1;

TXN_TIMESTAMP                                                               TARGET_PDB_NAME TARGET_HOST_NAM TXN_DETAILS
--------------------------------------------------------------------------- --------------- --------------- ---------------
29-JUN-25 03.06.43.264562 AM                                                PDB1            srv2            XXX
29-JUN-25 03.15.26.694170 AM                                                PRDAPPTST       srv1            XXX
29-JUN-25 03.27.26.855776 AM                                                PRDAPPTST       srv2            XXX
06-JUL-25 08.31.33.903344 AM                                                PRDAPPTST       srv2            XXX
06-JUL-25 08.32.29.154557 AM                                                PRDAPPTST       srv1            XXX
06-JUL-25 08.32.41.404084 AM                                                PRDAPPTST       srv2            XXX
06-JUL-25 09.53.06.164510 AM                                                PRDAPPTST       srv1            XXX
06-JUL-25 10.33.28.132217 AM                                                PRDAPPTST       srv2            XXX

8 rows selected.

SQL>
SQL> connect / as sysdba
Connected.
SQL> alter system archive log current;

System altered.

SQL>

I can now go to the Standby, Bring Datafiles Online, Resume Recovery and query the PDB

[oracle@stdby trace]$ sqlplus / as sysdba

SQL*Plus: Release 19.0.0.0.0 - Production on Sun Jul 6 10:39:50 2025
Version 19.25.0.0.0

Connected to:
Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Version 19.25.0.0.0

SQL> alter database recover managed standby database cancel;

Database altered.

SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup mount;
ORACLE instance started.

Total System Global Area 2147480256 bytes
Fixed Size 9179840 bytes
Variable Size 486539264 bytes
Database Buffers 1644167168 bytes
Redo Buffers 7593984 bytes
Database mounted.
SQL> alter session set container=PRDAPPTST;

Session altered.

SQL> alter database datafile '/Standby_DB/oradata/STDBY/PRDAPPTST/data_D-RACDB_TS-SYSTEM_FNO-60.dbf' online;
alter database datafile '/Standby_DB/oradata/STDBY/PRDAPPTST/data_D-RACDB_TS-SYSTEM_FNO-60.dbf' online
*
ERROR at line 1:
ORA-01156: recovery or flashback in progress may need access to files

SQL> alter database datafile '/Standby_DB/oradata/STDBY/PRDAPPTST/data_D-RACDB_TS-SYSAUX_FNO-61.dbf' online;
alter database datafile '/Standby_DB/oradata/STDBY/PRDAPPTST/data_D-RACDB_TS-SYSAUX_FNO-61.dbf' online
*
ERROR at line 1:
ORA-01156: recovery or flashback in progress may need access to files

SQL> alter database datafile '/Standby_DB/oradata/STDBY/PRDAPPTST/data_D-RACDB_TS-UNDOTBS1_FNO-62.dbf' online;
alter database datafile '/Standby_DB/oradata/STDBY/PRDAPPTST/data_D-RACDB_TS-UNDOTBS1_FNO-62.dbf' online
*
ERROR at line 1:
ORA-01156: recovery or flashback in progress may need access to files

SQL> alter database datafile '/Standby_DB/oradata/STDBY/PRDAPPTST/data_D-RACDB_TS-UNDO_2_FNO-63.dbf' online;
alter database datafile '/Standby_DB/oradata/STDBY/PRDAPPTST/data_D-RACDB_TS-UNDO_2_FNO-63.dbf' online
*
ERROR at line 1:
ORA-01156: recovery or flashback in progress may need access to files

SQL> alter database datafile '/Standby_DB/oradata/STDBY/PRDAPPTST/data_D-RACDB_TS-USERS_FNO-64.dbf' online;
alter database datafile '/Standby_DB/oradata/STDBY/PRDAPPTST/data_D-RACDB_TS-USERS_FNO-64.dbf' online
*
ERROR at line 1:
ORA-01156: recovery or flashback in progress may need access to files

SQL>
SQL> connect / as sysdba
Connected.
SQL> shutdown immediate;
ORA-01109: database not open

Database dismounted.
ORACLE instance shut down.
SQL> startup mount;
ORACLE instance started.

Session altered.

SQL> alter pluggable database enable recovery;
alter pluggable database enable recovery
*
ERROR at line 1:
ORA-01156: recovery or flashback in progress may need access to files

SQL> exit
Disconnected from Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Version 19.25.0.0.0
[oracle@stdby trace]$ dgmgrl
DGMGRL for Linux: Release 19.0.0.0.0 - Production on Sun Jul 6 11:05:42 2025
Version 19.25.0.0.0

Welcome to DGMGRL, type "help" for information.
DGMGRL> connect / as sysdba
Connected to "STDBY"
Connected as SYSDBA.
DGMGRL> edit database STDBY set state='apply-off';
Succeeded.
DGMGRL> exit
[oracle@stdby trace]$ sqlplus / as sysdba

SQL*Plus: Release 19.0.0.0.0 - Production on Sun Jul 6 11:06:48 2025
Version 19.25.0.0.0

Connected to:
Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Version 19.25.0.0.0

SQL> alter session set container=PRDAPPTST;

Session altered.

SQL> alter pluggable database enable recovery;

Pluggable database altered.

SQL>
SQL> exit
Disconnected from Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Version 19.25.0.0.0
[oracle@stdby trace]$ dgmgrl
DGMGRL for Linux: Release 19.0.0.0.0 - Production on Sun Jul 6 11:07:32 2025
Version 19.25.0.0.0

Welcome to DGMGRL, type "help" for information.
DGMGRL> connect / as sysdba
Connected to "STDBY"
Connected as SYSDBA.
DGMGRL> edit database stdby set state='apply-on';
Succeeded.
DGMGRL> exit
[oracle@stdby trace]$
[oracle@stdby trace]$ sqlplus / as sysdba

SQL*Plus: Release 19.0.0.0.0 - Production on Sun Jul 6 11:08:09 2025
Version 19.25.0.0.0

Connected to:
Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Version 19.25.0.0.0

SQL> select name, open_mode from v$pdbs;

NAME
--------------------------------------------------------------------------------
OPEN_MODE
----------
PDB$SEED
MOUNTED

PDB1
MOUNTED

PRDAPPTST
MOUNTED

SQL> alter database open read only;

Database altered.

SQL> alter pluggable database prdapptst open read only;

Pluggable database altered.

SQL>
SQL> alter session set container=PRDAPPTST;

Session altered.

SQL> set pages600 linesize 132
SQL> select * from hemant.my_txn_table order by 1;

TXN_TIMESTAMP TARGET_PDB_NAME TARGET_HOST_NAM TXN_DETAILS
--------------------------------------------------------------------------- --------------- --------------- ---------------
29-JUN-25 03.06.43.264562 AM PDB1 srv2 XXX
29-JUN-25 03.15.26.694170 AM PRDAPPTST srv1 XXX
29-JUN-25 03.27.26.855776 AM PRDAPPTST srv2 XXX
06-JUL-25 08.31.33.903344 AM PRDAPPTST srv2 XXX
06-JUL-25 08.32.29.154557 AM PRDAPPTST srv1 XXX
06-JUL-25 08.32.41.404084 AM PRDAPPTST srv2 XXX
06-JUL-25 09.53.06.164510 AM PRDAPPTST srv1 XXX
06-JUL-25 10.33.28.132217 AM PRDAPPTST srv2 XXX

8 rows selected.

SQL>

Now that the database is restored and recovery resumed, data is available in PRDAPPTST at the Standby as well !

29 June, 2025

Creating a new PDB in RAC without Standby Protection

I've published a new Video demonstration when you need to create a new PDB (even as a clone of an existing one) without requiring a Standby copy of the PDB.

(Use cases : Test environment for a day or two, it would take too long to create a new Test Server and clone the database, it would take too long to change Firewall rules to allow Applications to connect to the Test Server)

This in RAC with DataGuard Useful commands : Create new PDB :

CREATE PLUGGABLE DATABASE PRDAPPTST FROM PDB1  STANDBYS=NONE

Create Service :

srvctl add service -db RACDB  -service newtestpdb -preferred RACDB1,RACDB2 -tafpolicy BASIC -failovertype SELECT -clbgoal SHORT -pdb PRDAPPTST

Start Service :

srvctl enable service -db RACDB -service newtestpdb
srvctl status service -db RACDB -service newtestpdb
srvctl start service -db RACDB -service newtestpdb
srvctl status service -db RACDB -service newtestpdb

Always use custom Service Names instead of the default name derived from the PDB Name.

UPDATE 02-July : In response to a question on x.com : "One question: what if we want to create standby in future. Do we have to change standby parameter using any command or we can directly create standby normally"

My reply is :

The STANDBYS=NONE applies only to this PDB (PRDAPPTST). Any new PDB would still default to STANDBYS=ALL.

Although PRDAPPTST is intended to be dropped in a day or two, if you want it to be protected by Standby for longer or permanently, you can restore it to the Standby CDB (as it is in the controlfile and datadictionary) and resume recovery with ENABLE RECOVERY

Also see this series of posts on Refreshable Clone PDBs that I published a few years ago.

18 June, 2025

Backup a Backup that is in ASM

In RAC or Single Instance environments with ASM, it is possible to run database backups to ASM (typically the FRA diskgroup).

However, you would need the ability to copy the backup *out of ASM* -- e.g. using non-Oracle methods to copy to backup storage / offsite storage / tape drive.

Note : Timestamps are in UTC in the listings below

First, I run a Fresh Backup that, by default, goes to the designated FRA

[oracle@srv1 ~]$ sqlplus / as sysdba

SQL*Plus: Release 19.0.0.0.0 - Production on Wed Jun 18 14:34:21 2025
Version 19.25.0.0.0

Copyright (c) 1982, 2024, Oracle.  All rights reserved.


Connected to:
Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Version 19.25.0.0.0

SQL> show parameter db_recover

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
db_recovery_file_dest                string      +FRA
db_recovery_file_dest_size           big integer 13332M
SQL>
SQL> exit
Disconnected from Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Version 19.25.0.0.0
[oracle@srv1 ~]$ rman target /

Recovery Manager: Release 19.0.0.0.0 - Production on Wed Jun 18 14:34:49 2025
Version 19.25.0.0.0

Copyright (c) 1982, 2019, Oracle and/or its affiliates.  All rights reserved.

connected to target database: RACDB (DBID=1162136313)

RMAN> backup as compressed backupset database plus archivelog delete input;
backup as compressed backupset database plus archivelog delete input;

Starting backup at 18-JUN-25
current log archived
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=246 instance=RACDB1 device type=DISK
channel ORA_DISK_1: starting compressed archived log backup set
channel ORA_DISK_1: specifying archived log(s) in backup set
input archived log thread=1 sequence=381 RECID=1257 STAMP=1199502152
input archived log thread=2 sequence=334 RECID=1258 STAMP=1199502185
input archived log thread=1 sequence=382 RECID=1260 STAMP=1199502404
...
...
...
channel ORA_DISK_1: starting compressed full datafile backup set
channel ORA_DISK_1: specifying datafile(s) in backup set
input datafile file number=00001 name=+DATA/RACDB/DATAFILE/system.257.1164519439
input datafile file number=00003 name=+DATA/RACDB/DATAFILE/sysaux.258.1164519463
input datafile file number=00004 name=+DATA/RACDB/DATAFILE/undotbs1.259.1164519479
input datafile file number=00009 name=+DATA/RACDB/DATAFILE/undotbs2.269.1164519893
input datafile file number=00007 name=+DATA/RACDB/DATAFILE/users.260.1164519479
channel ORA_DISK_1: starting piece 1 at 18-JUN-25
channel ORA_DISK_1: finished piece 1 at 18-JUN-25
piece handle=+FRA/RACDB/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.442.1204122947 tag=TAG20250618T143546 comment=NONE
...
...
...
channel ORA_DISK_1: starting compressed full datafile backup set
channel ORA_DISK_1: specifying datafile(s) in backup set
input datafile file number=00010 name=+DATA/RACDB/1476C653214704CFE0635A38A8C08494/DATAFILE/system.274.1164520333
input datafile file number=00011 name=+DATA/RACDB/1476C653214704CFE0635A38A8C08494/DATAFILE/sysaux.275.1164520333
input datafile file number=00012 name=+DATA/RACDB/1476C653214704CFE0635A38A8C08494/DATAFILE/undotbs1.273.1164520333
input datafile file number=00013 name=+DATA/RACDB/1476C653214704CFE0635A38A8C08494/DATAFILE/undo_2.277.1164520345
input datafile file number=00015 name=+DATA/RACDB/1476C653214704CFE0635A38A8C08494/DATAFILE/users2.279.1167388913
input datafile file number=00016 name=+DATA/RACDB/1476C653214704CFE0635A38A8C08494/DATAFILE/users3.280.1167388955
input datafile file number=00014 name=+DATA/RACDB/1476C653214704CFE0635A38A8C08494/DATAFILE/users.278.1164520353
channel ORA_DISK_1: starting piece 1 at 18-JUN-25
channel ORA_DISK_1: finished piece 1 at 18-JUN-25
piece handle=+FRA/RACDB/1476C653214704CFE0635A38A8C08494/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.453.1204123013 tag=TAG20250618T143546 comment=NONE
...
...
...
RMAN-08120: warning: archived log not deleted, not yet applied by standby
archived log file name=+FRA/RACDB/ARCHIVELOG/2025_06_18/thread_1_seq_403.402.1204123149 thread=1 sequence=403
RMAN-08120: warning: archived log not deleted, not yet applied by standby
archived log file name=+FRA/RACDB/ARCHIVELOG/2025_06_18/thread_2_seq_348.515.1204123149 thread=2 sequence=348
Finished backup at 18-JUN-25

Starting Control File and SPFILE Autobackup at 18-JUN-25
piece handle=+FRA/RACDB/AUTOBACKUP/2025_06_18/s_1204123150.388.1204123151 comment=NONE
Finished Control File and SPFILE Autobackup at 18-JUN-25


RMAN>
RMAN> list backupset completed after "trunc(sysdate)";
list backupset completed after "trunc(sysdate)";

List of Backup Sets
===================


BS Key  Size       Device Type Elapsed Time Completion Time
------- ---------- ----------- ------------ ---------------
337     57.35M     DISK        00:00:03     18-JUN-25
        BP Key: 337   Status: AVAILABLE  Compressed: YES  Tag: TAG20250618T143542
        Piece Name: +FRA/RACDB/BACKUPSET/2025_06_18/annnf0_tag20250618t143542_0.473.1204122943

  List of Archived Logs in backup set 337
  Thrd Seq     Low SCN    Low Time  Next SCN   Next Time
  ---- ------- ---------- --------- ---------- ---------
 ...
 ...
 ...
  1    401     11161346   01-MAY-25 11165463   18-JUN-25
  1    402     11165463   18-JUN-25 11177493   18-JUN-25
...
...
...
  2    346     11161357   01-MAY-25 11161847   18-JUN-25
  2    347     11161847   18-JUN-25 11177499   18-JUN-25

BS Key  Type LV Size       Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
338     Full    1.07G      DISK        00:00:57     18-JUN-25
        BP Key: 338   Status: AVAILABLE  Compressed: YES  Tag: TAG20250618T143546
        Piece Name: +FRA/RACDB/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.442.1204122947
  List of Datafiles in backup set 338
  File LV Type Ckp SCN    Ckp Time  Abs Fuz SCN Sparse Name
  ---- -- ---- ---------- --------- ----------- ------ ----
  1       Full 11177541   18-JUN-25              NO    +DATA/RACDB/DATAFILE/system.257.1164519439
  3       Full 11177541   18-JUN-25              NO    +DATA/RACDB/DATAFILE/sysaux.258.1164519463
  4       Full 11177541   18-JUN-25              NO    +DATA/RACDB/DATAFILE/undotbs1.259.1164519479
  7       Full 11177541   18-JUN-25              NO    +DATA/RACDB/DATAFILE/users.260.1164519479
  9       Full 11177541   18-JUN-25              NO    +DATA/RACDB/DATAFILE/undotbs2.269.1164519893

BS Key  Type LV Size       Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
339     Full    775.09M    DISK        00:00:42     18-JUN-25
        BP Key: 339   Status: AVAILABLE  Compressed: YES  Tag: TAG20250618T143546
        Piece Name: +FRA/RACDB/1476C653214704CFE0635A38A8C08494/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.453.1204123013
  List of Datafiles in backup set 339
  Container ID: 3, PDB Name: PDB1
  File LV Type Ckp SCN    Ckp Time  Abs Fuz SCN Sparse Name
  ---- -- ---- ---------- --------- ----------- ------ ----
  10      Full 11177736   18-JUN-25              NO    +DATA/RACDB/1476C653214704CFE0635A38A8C08494/DATAFILE/system.274.1164520333
  11      Full 11177736   18-JUN-25              NO    +DATA/RACDB/1476C653214704CFE0635A38A8C08494/DATAFILE/sysaux.275.1164520333
  12      Full 11177736   18-JUN-25              NO    +DATA/RACDB/1476C653214704CFE0635A38A8C08494/DATAFILE/undotbs1.273.1164520333
  13      Full 11177736   18-JUN-25              NO    +DATA/RACDB/1476C653214704CFE0635A38A8C08494/DATAFILE/undo_2.277.1164520345
  14      Full 11177736   18-JUN-25              NO    +DATA/RACDB/1476C653214704CFE0635A38A8C08494/DATAFILE/users.278.1164520353
  15      Full 11177736   18-JUN-25              NO    +DATA/RACDB/1476C653214704CFE0635A38A8C08494/DATAFILE/users2.279.1167388913
  16      Full 11177736   18-JUN-25              NO    +DATA/RACDB/1476C653214704CFE0635A38A8C08494/DATAFILE/users3.280.1167388955

BS Key  Type LV Size       Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
340     Full    812.50M    DISK        00:00:42     18-JUN-25
        BP Key: 340   Status: AVAILABLE  Compressed: YES  Tag: TAG20250618T143546
        Piece Name: +FRA/RACDB/339BC12E8011538DE0635A38A8C0C92A/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.460.1204123057
  List of Datafiles in backup set 340
  Container ID: 5, PDB Name: TSTPDB
  File LV Type Ckp SCN    Ckp Time  Abs Fuz SCN Sparse Name
  ---- -- ---- ---------- --------- ----------- ------ ----
  25      Full 11083998   25-APR-25              NO    +DATA/RACDB/339BC12E8011538DE0635A38A8C0C92A/DATAFILE/system.281.1199369077
  26      Full 11083998   25-APR-25              NO    +DATA/RACDB/339BC12E8011538DE0635A38A8C0C92A/DATAFILE/sysaux.283.1199369077
  27      Full 11083998   25-APR-25              NO    +DATA/RACDB/339BC12E8011538DE0635A38A8C0C92A/DATAFILE/undotbs1.282.1199369077
  28      Full 11083998   25-APR-25              NO    +DATA/RACDB/339BC12E8011538DE0635A38A8C0C92A/DATAFILE/undo_2.285.1199369085

BS Key  Type LV Size       Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
341     Full    812.46M    DISK        00:00:42     18-JUN-25
        BP Key: 341   Status: AVAILABLE  Compressed: YES  Tag: TAG20250618T143546
        Piece Name: +FRA/RACDB/14769E258FBB5FD8E0635A38A8C09D43/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.349.1204123103
  List of Datafiles in backup set 341
  Container ID: 2, PDB Name: PDB$SEED
  File LV Type Ckp SCN    Ckp Time  Abs Fuz SCN Sparse Name
  ---- -- ---- ---------- --------- ----------- ------ ----
  5       Full 9669002    26-NOV-24              NO    +DATA/RACDB/86B637B62FE07A65E053F706E80A27CA/DATAFILE/system.265.1164519659
  6       Full 9669002    26-NOV-24              NO    +DATA/RACDB/86B637B62FE07A65E053F706E80A27CA/DATAFILE/sysaux.266.1164519659
  8       Full 9669002    26-NOV-24              NO    +DATA/RACDB/86B637B62FE07A65E053F706E80A27CA/DATAFILE/undotbs1.267.1164519659

BS Key  Size       Device Type Elapsed Time Completion Time
------- ---------- ----------- ------------ ---------------
342     674.00K    DISK        00:00:00     18-JUN-25
        BP Key: 342   Status: AVAILABLE  Compressed: YES  Tag: TAG20250618T143909
        Piece Name: +FRA/RACDB/BACKUPSET/2025_06_18/annnf0_tag20250618t143909_0.492.1204123149

  List of Archived Logs in backup set 342
  Thrd Seq     Low SCN    Low Time  Next SCN   Next Time
  ---- ------- ---------- --------- ---------- ---------
  1    403     11177493   18-JUN-25 11179239   18-JUN-25
  2    348     11177499   18-JUN-25 11179236   18-JUN-25

BS Key  Type LV Size       Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
343     Full    19.17M     DISK        00:00:00     18-JUN-25
        BP Key: 343   Status: AVAILABLE  Compressed: NO  Tag: TAG20250618T143910
        Piece Name: +FRA/RACDB/AUTOBACKUP/2025_06_18/s_1204123150.388.1204123151
  SPFILE Included: Modification time: 18-JUN-25
  SPFILE db_unique_name: RACDB
  Control File Included: Ckp SCN: 11179258     Ckp time: 18-JUN-25


RMAN>

So I have run a backup from the first node of the RAC Cluster "srv1". These are Backup Sets 337 to 343. Since I didn't provide a TAG name in the BACKUP command, they have default TAG names based on Date and Time (TAG20250618T143542, TAG20250618T143546, TAG20250618T143546, TAG20250618T143546, TAG20250618T143546, TAG20250618T143909, TAG20250618T143910)

Next I want to copy (i.e. backup) this backup to filesystem on "srv2" being the second node of the RAC Cluster. As they are on the (shared) ASM DiskGroup, I can crosscheck them from srv2 first before I backup to filesystem.

[oracle@srv2 ~]$ rman target /

Recovery Manager: Release 19.0.0.0.0 - Production on Wed Jun 18 14:45:19 2025
Version 19.25.0.0.0

Copyright (c) 1982, 2019, Oracle and/or its affiliates.  All rights reserved.

connected to target database: RACDB (DBID=1162136313)

RMAN> crosscheck backup completed after "trunc(sysdate)";
crosscheck backup completed after "trunc(sysdate)";
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=229 instance=RACDB2 device type=DISK
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/BACKUPSET/2025_06_18/annnf0_tag20250618t143542_0.473.1204122943 RECID=337 STAMP=1204122943
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.442.1204122947 RECID=338 STAMP=1204122946
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/1476C653214704CFE0635A38A8C08494/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.453.1204123013 RECID=339 STAMP=1204123012
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/339BC12E8011538DE0635A38A8C0C92A/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.460.1204123057 RECID=340 STAMP=1204123057
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/14769E258FBB5FD8E0635A38A8C09D43/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.349.1204123103 RECID=341 STAMP=1204123102
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/BACKUPSET/2025_06_18/annnf0_tag20250618t143909_0.492.1204123149 RECID=342 STAMP=1204123149
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/AUTOBACKUP/2025_06_18/s_1204123150.388.1204123151 RECID=343 STAMP=1204123150
Crosschecked 7 objects



RMAN>
RMAN> backup device type disk format '/u02/RMAN_To_Disk/%U' backupset completed after "trunc(sysdate)";
backup device type disk format '/u02/RMAN_To_Disk/%U' backupset completed after "trunc(sysdate)";
Starting backup at 18-JUN-25
using channel ORA_DISK_1
channel ORA_DISK_1: input backup set: count=380, stamp=1204122942, piece=1
channel ORA_DISK_1: starting piece 1 at 18-JUN-25
channel ORA_DISK_1: backup piece +FRA/RACDB/BACKUPSET/2025_06_18/annnf0_tag20250618t143542_0.473.1204122943
piece handle=/u02/RMAN_To_Disk/bs3sat9u_380_1_2 comment=NONE
channel ORA_DISK_1: finished piece 1 at 18-JUN-25
channel ORA_DISK_1: backup piece complete, elapsed time: 00:00:01
channel ORA_DISK_1: input backup set: count=381, stamp=1204122946, piece=1
channel ORA_DISK_1: starting piece 1 at 18-JUN-25
channel ORA_DISK_1: backup piece +FRA/RACDB/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.442.1204122947
piece handle=/u02/RMAN_To_Disk/bt3sata2_381_1_2 comment=NONE
channel ORA_DISK_1: finished piece 1 at 18-JUN-25
channel ORA_DISK_1: backup piece complete, elapsed time: 00:00:01
channel ORA_DISK_1: input backup set: count=382, stamp=1204123011, piece=1
channel ORA_DISK_1: starting piece 1 at 18-JUN-25
channel ORA_DISK_1: backup piece +FRA/RACDB/1476C653214704CFE0635A38A8C08494/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.453.1204123013
piece handle=/u02/RMAN_To_Disk/bu3satc3_382_1_2 comment=NONE
channel ORA_DISK_1: finished piece 1 at 18-JUN-25
channel ORA_DISK_1: backup piece complete, elapsed time: 00:00:01
channel ORA_DISK_1: input backup set: count=383, stamp=1204123057, piece=1
channel ORA_DISK_1: starting piece 1 at 18-JUN-25
channel ORA_DISK_1: backup piece +FRA/RACDB/339BC12E8011538DE0635A38A8C0C92A/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.460.1204123057
piece handle=/u02/RMAN_To_Disk/bv3satdh_383_1_2 comment=NONE
channel ORA_DISK_1: finished piece 1 at 18-JUN-25
channel ORA_DISK_1: backup piece complete, elapsed time: 00:00:01
channel ORA_DISK_1: input backup set: count=384, stamp=1204123102, piece=1
channel ORA_DISK_1: starting piece 1 at 18-JUN-25
channel ORA_DISK_1: backup piece +FRA/RACDB/14769E258FBB5FD8E0635A38A8C09D43/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.349.1204123103
piece handle=/u02/RMAN_To_Disk/c03sateu_384_1_2 comment=NONE
channel ORA_DISK_1: finished piece 1 at 18-JUN-25
channel ORA_DISK_1: backup piece complete, elapsed time: 00:00:01
channel ORA_DISK_1: input backup set: count=385, stamp=1204123149, piece=1
channel ORA_DISK_1: starting piece 1 at 18-JUN-25
channel ORA_DISK_1: backup piece +FRA/RACDB/BACKUPSET/2025_06_18/annnf0_tag20250618t143909_0.492.1204123149
piece handle=/u02/RMAN_To_Disk/c13satgd_385_1_2 comment=NONE
channel ORA_DISK_1: finished piece 1 at 18-JUN-25
channel ORA_DISK_1: backup piece complete, elapsed time: 00:00:01
channel ORA_DISK_1: input backup set: count=386, stamp=1204123150, piece=1
channel ORA_DISK_1: starting piece 1 at 18-JUN-25
channel ORA_DISK_1: backup piece +FRA/RACDB/AUTOBACKUP/2025_06_18/s_1204123150.388.1204123151
piece handle=/u02/RMAN_To_Disk/c23satge_386_1_2 comment=NONE
channel ORA_DISK_1: finished piece 1 at 18-JUN-25
channel ORA_DISK_1: backup piece complete, elapsed time: 00:00:01
Finished backup at 18-JUN-25

Starting Control File and SPFILE Autobackup at 18-JUN-25
piece handle=+FRA/RACDB/AUTOBACKUP/2025_06_18/s_1204123831.443.1204123831 comment=NONE
Finished Control File and SPFILE Autobackup at 18-JUN-25


RMAN>
RMAN> crosscheck backup completed after "trunc(sysdate)";
crosscheck backup completed after "trunc(sysdate)";
using channel ORA_DISK_1
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/BACKUPSET/2025_06_18/annnf0_tag20250618t143542_0.473.1204122943 RECID=337 STAMP=1204122943
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=/u02/RMAN_To_Disk/bs3sat9u_380_1_2 RECID=344 STAMP=1204123823
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.442.1204122947 RECID=338 STAMP=1204122946
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=/u02/RMAN_To_Disk/bt3sata2_381_1_2 RECID=345 STAMP=1204123825
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/1476C653214704CFE0635A38A8C08494/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.453.1204123013 RECID=339 STAMP=1204123012
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=/u02/RMAN_To_Disk/bu3satc3_382_1_2 RECID=346 STAMP=1204123826
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/339BC12E8011538DE0635A38A8C0C92A/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.460.1204123057 RECID=340 STAMP=1204123057
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=/u02/RMAN_To_Disk/bv3satdh_383_1_2 RECID=347 STAMP=1204123827
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/14769E258FBB5FD8E0635A38A8C09D43/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.349.1204123103 RECID=341 STAMP=1204123102
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=/u02/RMAN_To_Disk/c03sateu_384_1_2 RECID=348 STAMP=1204123828
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/BACKUPSET/2025_06_18/annnf0_tag20250618t143909_0.492.1204123149 RECID=342 STAMP=1204123149
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=/u02/RMAN_To_Disk/c13satgd_385_1_2 RECID=349 STAMP=1204123829
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/AUTOBACKUP/2025_06_18/s_1204123150.388.1204123151 RECID=343 STAMP=1204123150
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=/u02/RMAN_To_Disk/c23satge_386_1_2 RECID=350 STAMP=1204123830
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/AUTOBACKUP/2025_06_18/s_1204123831.443.1204123831 RECID=351 STAMP=1204123831
Crosschecked 15 objects



RMAN>RMAN> list backup summary completed after "trunc(sysdate)";
list backup summary completed after "trunc(sysdate)";

List of Backups
===============
Key     TY LV S Device Type Completion Time #Pieces #Copies Compressed Tag
------- -- -- - ----------- --------------- ------- ------- ---------- ---
337     B  A  A DISK        18-JUN-25       1       2       YES        TAG20250618T143542
338     B  F  A DISK        18-JUN-25       1       2       YES        TAG20250618T143546
339     B  F  A DISK        18-JUN-25       1       2       YES        TAG20250618T143546
340     B  F  A DISK        18-JUN-25       1       2       YES        TAG20250618T143546
341     B  F  A DISK        18-JUN-25       1       2       YES        TAG20250618T143546
342     B  A  A DISK        18-JUN-25       1       2       YES        TAG20250618T143909
343     B  F  A DISK        18-JUN-25       1       2       NO         TAG20250618T143910
344     B  F  A DISK        18-JUN-25       1       1       NO         TAG20250618T145031


RMAN>
RMAN> list backupset completed after "trunc(sysdate)";
list backupset completed after "trunc(sysdate)";
using target database control file instead of recovery catalog

List of Backup Sets
===================


BS Key  Size
------- ----------
337     57.35M

  List of Archived Logs in backup set 337
  Thrd Seq     Low SCN    Low Time  Next SCN   Next Time
  ---- ------- ---------- --------- ---------- ---------
 ...
 ...
 ...
  1    401     11161346   01-MAY-25 11165463   18-JUN-25
  1    402     11165463   18-JUN-25 11177493   18-JUN-25
...
...
...
  2    346     11161357   01-MAY-25 11161847   18-JUN-25
  2    347     11161847   18-JUN-25 11177499   18-JUN-25

  Backup Set Copy #1 of backup set 337
  Device Type Elapsed Time Completion Time Compressed Tag
  ----------- ------------ --------------- ---------- ---
  DISK        00:00:03     18-JUN-25       YES        TAG20250618T143542

    List of Backup Pieces for backup set 337 Copy #1   ### Shown as Copy #1 for Backupset 337
    BP Key  Pc# Status      Piece Name
    ------- --- ----------- ----------
    337     1   AVAILABLE   +FRA/RACDB/BACKUPSET/2025_06_18/annnf0_tag20250618t143542_0.473.1204122943

  Backup Set Copy #2 of backup set 337
  Device Type Elapsed Time Completion Time Compressed Tag
  ----------- ------------ --------------- ---------- ---
  DISK        00:00:03     18-JUN-25       YES        TAG20250618T143542

    List of Backup Pieces for backup set 337 Copy #2   ### Shown as Copy #2 for Backupset 337
    BP Key  Pc# Status      Piece Name
    ------- --- ----------- ----------
    344     1   AVAILABLE   /u02/RMAN_To_Disk/bs3sat9u_380_1_2

BS Key  Type LV Size
------- ---- -- ----------
338     Full    1.07G
  List of Datafiles in backup set 338
  File LV Type Ckp SCN    Ckp Time  Abs Fuz SCN Sparse Name
  ---- -- ---- ---------- --------- ----------- ------ ----
  1       Full 11177541   18-JUN-25              NO    +DATA/RACDB/DATAFILE/system.257.1164519439
  3       Full 11177541   18-JUN-25              NO    +DATA/RACDB/DATAFILE/sysaux.258.1164519463
  4       Full 11177541   18-JUN-25              NO    +DATA/RACDB/DATAFILE/undotbs1.259.1164519479
  7       Full 11177541   18-JUN-25              NO    +DATA/RACDB/DATAFILE/users.260.1164519479
  9       Full 11177541   18-JUN-25              NO    +DATA/RACDB/DATAFILE/undotbs2.269.1164519893

  Backup Set Copy #1 of backup set 338
  Device Type Elapsed Time Completion Time Compressed Tag
  ----------- ------------ --------------- ---------- ---
  DISK        00:00:57     18-JUN-25       YES        TAG20250618T143546

    List of Backup Pieces for backup set 338 Copy #1   ### Shown as Copy #1 for Backupset 338
    BP Key  Pc# Status      Piece Name
    ------- --- ----------- ----------
    338     1   AVAILABLE   +FRA/RACDB/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.442.1204122947

  Backup Set Copy #2 of backup set 338
  Device Type Elapsed Time Completion Time Compressed Tag
  ----------- ------------ --------------- ---------- ---
  DISK        00:00:57     18-JUN-25       YES        TAG20250618T143546

    List of Backup Pieces for backup set 338 Copy #2   ### Shown as Copy #2 for Backupset 338
    BP Key  Pc# Status      Piece Name
    ------- --- ----------- ----------
    345     1   AVAILABLE   /u02/RMAN_To_Disk/bt3sata2_381_1_2

BS Key  Type LV Size
------- ---- -- ----------
339     Full    775.09M
  List of Datafiles in backup set 339
  Container ID: 3, PDB Name: PDB1
  File LV Type Ckp SCN    Ckp Time  Abs Fuz SCN Sparse Name
  ---- -- ---- ---------- --------- ----------- ------ ----
  10      Full 11177736   18-JUN-25              NO    +DATA/RACDB/1476C653214704CFE0635A38A8C08494/DATAFILE/system.274.1164520333
  11      Full 11177736   18-JUN-25              NO    +DATA/RACDB/1476C653214704CFE0635A38A8C08494/DATAFILE/sysaux.275.1164520333
  12      Full 11177736   18-JUN-25              NO    +DATA/RACDB/1476C653214704CFE0635A38A8C08494/DATAFILE/undotbs1.273.1164520333
  13      Full 11177736   18-JUN-25              NO    +DATA/RACDB/1476C653214704CFE0635A38A8C08494/DATAFILE/undo_2.277.1164520345
  14      Full 11177736   18-JUN-25              NO    +DATA/RACDB/1476C653214704CFE0635A38A8C08494/DATAFILE/users.278.1164520353
  15      Full 11177736   18-JUN-25              NO    +DATA/RACDB/1476C653214704CFE0635A38A8C08494/DATAFILE/users2.279.1167388913
  16      Full 11177736   18-JUN-25              NO    +DATA/RACDB/1476C653214704CFE0635A38A8C08494/DATAFILE/users3.280.1167388955

  Backup Set Copy #1 of backup set 339
  Device Type Elapsed Time Completion Time Compressed Tag
  ----------- ------------ --------------- ---------- ---
  DISK        00:00:42     18-JUN-25       YES        TAG20250618T143546

    List of Backup Pieces for backup set 339 Copy #1   ### Shown as Copy #1 for Backupset 339
    BP Key  Pc# Status      Piece Name
    ------- --- ----------- ----------
    339     1   AVAILABLE   +FRA/RACDB/1476C653214704CFE0635A38A8C08494/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.453.1204123013

  Backup Set Copy #2 of backup set 339
  Device Type Elapsed Time Completion Time Compressed Tag
  ----------- ------------ --------------- ---------- ---
  DISK        00:00:42     18-JUN-25       YES        TAG20250618T143546

    List of Backup Pieces for backup set 339 Copy #2    ### Shown as Copy #2 for Backupset 339
    BP Key  Pc# Status      Piece Name
    ------- --- ----------- ----------
    346     1   AVAILABLE   /u02/RMAN_To_Disk/bu3satc3_382_1_2

BS Key  Type LV Size
------- ---- -- ----------
340     Full    812.50M
  List of Datafiles in backup set 340
  Container ID: 5, PDB Name: TSTPDB
  File LV Type Ckp SCN    Ckp Time  Abs Fuz SCN Sparse Name
  ---- -- ---- ---------- --------- ----------- ------ ----
  25      Full 11083998   25-APR-25              NO    +DATA/RACDB/339BC12E8011538DE0635A38A8C0C92A/DATAFILE/system.281.1199369077
  26      Full 11083998   25-APR-25              NO    +DATA/RACDB/339BC12E8011538DE0635A38A8C0C92A/DATAFILE/sysaux.283.1199369077
  27      Full 11083998   25-APR-25              NO    +DATA/RACDB/339BC12E8011538DE0635A38A8C0C92A/DATAFILE/undotbs1.282.1199369077
  28      Full 11083998   25-APR-25              NO    +DATA/RACDB/339BC12E8011538DE0635A38A8C0C92A/DATAFILE/undo_2.285.1199369085

  Backup Set Copy #1 of backup set 340
  Device Type Elapsed Time Completion Time Compressed Tag
  ----------- ------------ --------------- ---------- ---
  DISK        00:00:42     18-JUN-25       YES        TAG20250618T143546

    List of Backup Pieces for backup set 340 Copy #1
    BP Key  Pc# Status      Piece Name
    ------- --- ----------- ----------
    340     1   AVAILABLE   +FRA/RACDB/339BC12E8011538DE0635A38A8C0C92A/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.460.1204123057

  Backup Set Copy #2 of backup set 340
  Device Type Elapsed Time Completion Time Compressed Tag
  ----------- ------------ --------------- ---------- ---
  DISK        00:00:42     18-JUN-25       YES        TAG20250618T143546

    List of Backup Pieces for backup set 340 Copy #2
    BP Key  Pc# Status      Piece Name
    ------- --- ----------- ----------
    347     1   AVAILABLE   /u02/RMAN_To_Disk/bv3satdh_383_1_2

BS Key  Type LV Size
------- ---- -- ----------
341     Full    812.46M
  List of Datafiles in backup set 341
  Container ID: 2, PDB Name: PDB$SEED
  File LV Type Ckp SCN    Ckp Time  Abs Fuz SCN Sparse Name
  ---- -- ---- ---------- --------- ----------- ------ ----
  5       Full 9669002    26-NOV-24              NO    +DATA/RACDB/86B637B62FE07A65E053F706E80A27CA/DATAFILE/system.265.1164519659
  6       Full 9669002    26-NOV-24              NO    +DATA/RACDB/86B637B62FE07A65E053F706E80A27CA/DATAFILE/sysaux.266.1164519659
  8       Full 9669002    26-NOV-24              NO    +DATA/RACDB/86B637B62FE07A65E053F706E80A27CA/DATAFILE/undotbs1.267.1164519659

  Backup Set Copy #1 of backup set 341
  Device Type Elapsed Time Completion Time Compressed Tag
  ----------- ------------ --------------- ---------- ---
  DISK        00:00:42     18-JUN-25       YES        TAG20250618T143546

    List of Backup Pieces for backup set 341 Copy #1
    BP Key  Pc# Status      Piece Name
    ------- --- ----------- ----------
    341     1   AVAILABLE   +FRA/RACDB/14769E258FBB5FD8E0635A38A8C09D43/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.349.1204123103

  Backup Set Copy #2 of backup set 341
  Device Type Elapsed Time Completion Time Compressed Tag
  ----------- ------------ --------------- ---------- ---
  DISK        00:00:42     18-JUN-25       YES        TAG20250618T143546

    List of Backup Pieces for backup set 341 Copy #2
    BP Key  Pc# Status      Piece Name
    ------- --- ----------- ----------
    348     1   AVAILABLE   /u02/RMAN_To_Disk/c03sateu_384_1_2

BS Key  Size
------- ----------
342     674.00K

  List of Archived Logs in backup set 342
  Thrd Seq     Low SCN    Low Time  Next SCN   Next Time
  ---- ------- ---------- --------- ---------- ---------
  1    403     11177493   18-JUN-25 11179239   18-JUN-25
  2    348     11177499   18-JUN-25 11179236   18-JUN-25

  Backup Set Copy #1 of backup set 342
  Device Type Elapsed Time Completion Time Compressed Tag
  ----------- ------------ --------------- ---------- ---
  DISK        00:00:00     18-JUN-25       YES        TAG20250618T143909

    List of Backup Pieces for backup set 342 Copy #1
    BP Key  Pc# Status      Piece Name
    ------- --- ----------- ----------
    342     1   AVAILABLE   +FRA/RACDB/BACKUPSET/2025_06_18/annnf0_tag20250618t143909_0.492.1204123149

  Backup Set Copy #2 of backup set 342
  Device Type Elapsed Time Completion Time Compressed Tag
  ----------- ------------ --------------- ---------- ---
  DISK        00:00:00     18-JUN-25       YES        TAG20250618T143909

    List of Backup Pieces for backup set 342 Copy #2
    BP Key  Pc# Status      Piece Name
    ------- --- ----------- ----------
    349     1   AVAILABLE   /u02/RMAN_To_Disk/c13satgd_385_1_2

BS Key  Type LV Size
------- ---- -- ----------
343     Full    19.17M
  SPFILE Included: Modification time: 18-JUN-25
  SPFILE db_unique_name: RACDB
  Control File Included: Ckp SCN: 11179258     Ckp time: 18-JUN-25

  Backup Set Copy #1 of backup set 343
  Device Type Elapsed Time Completion Time Compressed Tag
  ----------- ------------ --------------- ---------- ---
  DISK        00:00:00     18-JUN-25       NO         TAG20250618T143910

    List of Backup Pieces for backup set 343 Copy #1
    BP Key  Pc# Status      Piece Name
    ------- --- ----------- ----------
    343     1   AVAILABLE   +FRA/RACDB/AUTOBACKUP/2025_06_18/s_1204123150.388.1204123151

  Backup Set Copy #2 of backup set 343
  Device Type Elapsed Time Completion Time Compressed Tag
  ----------- ------------ --------------- ---------- ---
  DISK        00:00:00     18-JUN-25       NO         TAG20250618T143910

    List of Backup Pieces for backup set 343 Copy #2
    BP Key  Pc# Status      Piece Name
    ------- --- ----------- ----------
    350     1   AVAILABLE   /u02/RMAN_To_Disk/c23satge_386_1_2

BS Key  Type LV Size       Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
344     Full    19.17M     DISK        00:00:00     18-JUN-25
        BP Key: 351   Status: AVAILABLE  Compressed: NO  Tag: TAG20250618T145031
        Piece Name: +FRA/RACDB/AUTOBACKUP/2025_06_18/s_1204123831.443.1204123831
  SPFILE Included: Modification time: 18-JUN-25
  SPFILE db_unique_name: RACDB
  Control File Included: Ckp SCN: 11185112     Ckp time: 18-JUN-25


RMAN>

[oracle@srv2 ~]$ cd /u02/RMAN_To_Disk
[oracle@srv2 RMAN_To_Disk]$ ls -l
total 3656024
-rw-r-----. 1 oracle oinstall   60140032 Jun 18 14:50 bs3sat9u_380_1_2
-rw-r-----. 1 oracle oinstall 1146150912 Jun 18 14:50 bt3sata2_381_1_2
-rw-r-----. 1 oracle oinstall  812752896 Jun 18 14:50 bu3satc3_382_1_2
-rw-r-----. 1 oracle oinstall  851976192 Jun 18 14:50 bv3satdh_383_1_2
-rw-r-----. 1 oracle oinstall  851935232 Jun 18 14:50 c03sateu_384_1_2
-rw-r-----. 1 oracle oinstall     690688 Jun 18 14:50 c13satgd_385_1_2
-rw-r-----. 1 oracle oinstall   20119552 Jun 18 14:50 c23satge_386_1_2
[oracle@srv2 RMAN_To_Disk]$

Thus, RMAN on Server "srv2" sees 2 copies of each backupset (337 to 343) (while 344 is the new BackupsSet for the Controlfile + SPFILE Autobackp created on FRA)

However srv1 will not "see" the additional BackupSet Copies ("Copy #2") created on FileSystem on srv2 -- although they will appear in the controlfile, a CROSSCHECK executed from srv1 will fail to find them.

[oracle@srv1 ~]$ rman target /

Recovery Manager: Release 19.0.0.0.0 - Production on Wed Jun 18 15:05:16 2025
Version 19.25.0.0.0

Copyright (c) 1982, 2019, Oracle and/or its affiliates.  All rights reserved.

connected to target database: RACDB (DBID=1162136313)

RMAN> list backup completed after "trunc(sysdate)";
list backup completed after "trunc(sysdate)";
using target database control file instead of recovery catalog

List of Backup Sets
===================


BS Key  Size
------- ----------
337     57.35M

  List of Archived Logs in backup set 337
  Thrd Seq     Low SCN    Low Time  Next SCN   Next Time
  ---- ------- ---------- --------- ---------- ---------
 ...
 ...
 ...
  1    401     11161346   01-MAY-25 11165463   18-JUN-25
  1    402     11165463   18-JUN-25 11177493   18-JUN-25
...
...
...
  2    346     11161357   01-MAY-25 11161847   18-JUN-25
  2    347     11161847   18-JUN-25 11177499   18-JUN-25

  Backup Set Copy #1 of backup set 337
  Device Type Elapsed Time Completion Time Compressed Tag
  ----------- ------------ --------------- ---------- ---
  DISK        00:00:03     18-JUN-25       YES        TAG20250618T143542

    List of Backup Pieces for backup set 337 Copy #1
    BP Key  Pc# Status      Piece Name
    ------- --- ----------- ----------
    337     1   AVAILABLE   +FRA/RACDB/BACKUPSET/2025_06_18/annnf0_tag20250618t143542_0.473.1204122943

  Backup Set Copy #2 of backup set 337
  Device Type Elapsed Time Completion Time Compressed Tag
  ----------- ------------ --------------- ---------- ---
  DISK        00:00:03     18-JUN-25       YES        TAG20250618T143542

    List of Backup Pieces for backup set 337 Copy #2
    BP Key  Pc# Status      Piece Name
    ------- --- ----------- ----------
    344     1   AVAILABLE   /u02/RMAN_To_Disk/bs3sat9u_380_1_2

BS Key  Type LV Size
------- ---- -- ----------
338     Full    1.07G
  List of Datafiles in backup set 338
  File LV Type Ckp SCN    Ckp Time  Abs Fuz SCN Sparse Name
  ---- -- ---- ---------- --------- ----------- ------ ----
  1       Full 11177541   18-JUN-25              NO    +DATA/RACDB/DATAFILE/system.257.1164519439
  3       Full 11177541   18-JUN-25              NO    +DATA/RACDB/DATAFILE/sysaux.258.1164519463
  4       Full 11177541   18-JUN-25              NO    +DATA/RACDB/DATAFILE/undotbs1.259.1164519479
  7       Full 11177541   18-JUN-25              NO    +DATA/RACDB/DATAFILE/users.260.1164519479
  9       Full 11177541   18-JUN-25              NO    +DATA/RACDB/DATAFILE/undotbs2.269.1164519893

  Backup Set Copy #1 of backup set 338
  Device Type Elapsed Time Completion Time Compressed Tag
  ----------- ------------ --------------- ---------- ---
  DISK        00:00:57     18-JUN-25       YES        TAG20250618T143546

    List of Backup Pieces for backup set 338 Copy #1
    BP Key  Pc# Status      Piece Name
    ------- --- ----------- ----------
    338     1   AVAILABLE   +FRA/RACDB/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.442.1204122947

  Backup Set Copy #2 of backup set 338
  Device Type Elapsed Time Completion Time Compressed Tag
  ----------- ------------ --------------- ---------- ---
  DISK        00:00:57     18-JUN-25       YES        TAG20250618T143546

    List of Backup Pieces for backup set 338 Copy #2
    BP Key  Pc# Status      Piece Name
    ------- --- ----------- ----------
    345     1   AVAILABLE   /u02/RMAN_To_Disk/bt3sata2_381_1_2

BS Key  Type LV Size
------- ---- -- ----------
339     Full    775.09M
  List of Datafiles in backup set 339
  Container ID: 3, PDB Name: PDB1
  File LV Type Ckp SCN    Ckp Time  Abs Fuz SCN Sparse Name
  ---- -- ---- ---------- --------- ----------- ------ ----
  10      Full 11177736   18-JUN-25              NO    +DATA/RACDB/1476C653214704CFE0635A38A8C08494/DATAFILE/system.274.1164520333
  11      Full 11177736   18-JUN-25              NO    +DATA/RACDB/1476C653214704CFE0635A38A8C08494/DATAFILE/sysaux.275.1164520333
  12      Full 11177736   18-JUN-25              NO    +DATA/RACDB/1476C653214704CFE0635A38A8C08494/DATAFILE/undotbs1.273.1164520333
  13      Full 11177736   18-JUN-25              NO    +DATA/RACDB/1476C653214704CFE0635A38A8C08494/DATAFILE/undo_2.277.1164520345
  14      Full 11177736   18-JUN-25              NO    +DATA/RACDB/1476C653214704CFE0635A38A8C08494/DATAFILE/users.278.1164520353
  15      Full 11177736   18-JUN-25              NO    +DATA/RACDB/1476C653214704CFE0635A38A8C08494/DATAFILE/users2.279.1167388913
  16      Full 11177736   18-JUN-25              NO    +DATA/RACDB/1476C653214704CFE0635A38A8C08494/DATAFILE/users3.280.1167388955

  Backup Set Copy #1 of backup set 339
  Device Type Elapsed Time Completion Time Compressed Tag
  ----------- ------------ --------------- ---------- ---
  DISK        00:00:42     18-JUN-25       YES        TAG20250618T143546

    List of Backup Pieces for backup set 339 Copy #1
    BP Key  Pc# Status      Piece Name
    ------- --- ----------- ----------
    339     1   AVAILABLE   +FRA/RACDB/1476C653214704CFE0635A38A8C08494/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.453.1204123013

  Backup Set Copy #2 of backup set 339
  Device Type Elapsed Time Completion Time Compressed Tag
  ----------- ------------ --------------- ---------- ---
  DISK        00:00:42     18-JUN-25       YES        TAG20250618T143546

    List of Backup Pieces for backup set 339 Copy #2
    BP Key  Pc# Status      Piece Name
    ------- --- ----------- ----------
    346     1   AVAILABLE   /u02/RMAN_To_Disk/bu3satc3_382_1_2

BS Key  Type LV Size
------- ---- -- ----------
340     Full    812.50M
  List of Datafiles in backup set 340
  Container ID: 5, PDB Name: TSTPDB
  File LV Type Ckp SCN    Ckp Time  Abs Fuz SCN Sparse Name
  ---- -- ---- ---------- --------- ----------- ------ ----
  25      Full 11083998   25-APR-25              NO    +DATA/RACDB/339BC12E8011538DE0635A38A8C0C92A/DATAFILE/system.281.1199369077
  26      Full 11083998   25-APR-25              NO    +DATA/RACDB/339BC12E8011538DE0635A38A8C0C92A/DATAFILE/sysaux.283.1199369077
  27      Full 11083998   25-APR-25              NO    +DATA/RACDB/339BC12E8011538DE0635A38A8C0C92A/DATAFILE/undotbs1.282.1199369077
  28      Full 11083998   25-APR-25              NO    +DATA/RACDB/339BC12E8011538DE0635A38A8C0C92A/DATAFILE/undo_2.285.1199369085

  Backup Set Copy #1 of backup set 340
  Device Type Elapsed Time Completion Time Compressed Tag
  ----------- ------------ --------------- ---------- ---
  DISK        00:00:42     18-JUN-25       YES        TAG20250618T143546

    List of Backup Pieces for backup set 340 Copy #1
    BP Key  Pc# Status      Piece Name
    ------- --- ----------- ----------
    340     1   AVAILABLE   +FRA/RACDB/339BC12E8011538DE0635A38A8C0C92A/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.460.1204123057

  Backup Set Copy #2 of backup set 340
  Device Type Elapsed Time Completion Time Compressed Tag
  ----------- ------------ --------------- ---------- ---
  DISK        00:00:42     18-JUN-25       YES        TAG20250618T143546

    List of Backup Pieces for backup set 340 Copy #2
    BP Key  Pc# Status      Piece Name
    ------- --- ----------- ----------
    347     1   AVAILABLE   /u02/RMAN_To_Disk/bv3satdh_383_1_2

BS Key  Type LV Size
------- ---- -- ----------
341     Full    812.46M
  List of Datafiles in backup set 341
  Container ID: 2, PDB Name: PDB$SEED
  File LV Type Ckp SCN    Ckp Time  Abs Fuz SCN Sparse Name
  ---- -- ---- ---------- --------- ----------- ------ ----
  5       Full 9669002    26-NOV-24              NO    +DATA/RACDB/86B637B62FE07A65E053F706E80A27CA/DATAFILE/system.265.1164519659
  6       Full 9669002    26-NOV-24              NO    +DATA/RACDB/86B637B62FE07A65E053F706E80A27CA/DATAFILE/sysaux.266.1164519659
  8       Full 9669002    26-NOV-24              NO    +DATA/RACDB/86B637B62FE07A65E053F706E80A27CA/DATAFILE/undotbs1.267.1164519659

  Backup Set Copy #1 of backup set 341
  Device Type Elapsed Time Completion Time Compressed Tag
  ----------- ------------ --------------- ---------- ---
  DISK        00:00:42     18-JUN-25       YES        TAG20250618T143546

    List of Backup Pieces for backup set 341 Copy #1
    BP Key  Pc# Status      Piece Name
    ------- --- ----------- ----------
    341     1   AVAILABLE   +FRA/RACDB/14769E258FBB5FD8E0635A38A8C09D43/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.349.1204123103

  Backup Set Copy #2 of backup set 341
  Device Type Elapsed Time Completion Time Compressed Tag
  ----------- ------------ --------------- ---------- ---
  DISK        00:00:42     18-JUN-25       YES        TAG20250618T143546

    List of Backup Pieces for backup set 341 Copy #2
    BP Key  Pc# Status      Piece Name
    ------- --- ----------- ----------
    348     1   AVAILABLE   /u02/RMAN_To_Disk/c03sateu_384_1_2

BS Key  Size
------- ----------
342     674.00K

  List of Archived Logs in backup set 342
  Thrd Seq     Low SCN    Low Time  Next SCN   Next Time
  ---- ------- ---------- --------- ---------- ---------
  1    403     11177493   18-JUN-25 11179239   18-JUN-25
  2    348     11177499   18-JUN-25 11179236   18-JUN-25

  Backup Set Copy #1 of backup set 342
  Device Type Elapsed Time Completion Time Compressed Tag
  ----------- ------------ --------------- ---------- ---
  DISK        00:00:00     18-JUN-25       YES        TAG20250618T143909

    List of Backup Pieces for backup set 342 Copy #1
    BP Key  Pc# Status      Piece Name
    ------- --- ----------- ----------
    342     1   AVAILABLE   +FRA/RACDB/BACKUPSET/2025_06_18/annnf0_tag20250618t143909_0.492.1204123149

  Backup Set Copy #2 of backup set 342
  Device Type Elapsed Time Completion Time Compressed Tag
  ----------- ------------ --------------- ---------- ---
  DISK        00:00:00     18-JUN-25       YES        TAG20250618T143909

    List of Backup Pieces for backup set 342 Copy #2
    BP Key  Pc# Status      Piece Name
    ------- --- ----------- ----------
    349     1   AVAILABLE   /u02/RMAN_To_Disk/c13satgd_385_1_2

BS Key  Type LV Size
------- ---- -- ----------
343     Full    19.17M
  SPFILE Included: Modification time: 18-JUN-25
  SPFILE db_unique_name: RACDB
  Control File Included: Ckp SCN: 11179258     Ckp time: 18-JUN-25

  Backup Set Copy #1 of backup set 343
  Device Type Elapsed Time Completion Time Compressed Tag
  ----------- ------------ --------------- ---------- ---
  DISK        00:00:00     18-JUN-25       NO         TAG20250618T143910

    List of Backup Pieces for backup set 343 Copy #1
    BP Key  Pc# Status      Piece Name
    ------- --- ----------- ----------
    343     1   AVAILABLE   +FRA/RACDB/AUTOBACKUP/2025_06_18/s_1204123150.388.1204123151

  Backup Set Copy #2 of backup set 343
  Device Type Elapsed Time Completion Time Compressed Tag
  ----------- ------------ --------------- ---------- ---
  DISK        00:00:00     18-JUN-25       NO         TAG20250618T143910

    List of Backup Pieces for backup set 343 Copy #2
    BP Key  Pc# Status      Piece Name
    ------- --- ----------- ----------
    350     1   AVAILABLE   /u02/RMAN_To_Disk/c23satge_386_1_2

BS Key  Type LV Size       Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
344     Full    19.17M     DISK        00:00:00     18-JUN-25
        BP Key: 351   Status: AVAILABLE  Compressed: NO  Tag: TAG20250618T145031
        Piece Name: +FRA/RACDB/AUTOBACKUP/2025_06_18/s_1204123831.443.1204123831
  SPFILE Included: Modification time: 18-JUN-25
  SPFILE db_unique_name: RACDB
  Control File Included: Ckp SCN: 11185112     Ckp time: 18-JUN-25


RMAN>
RMAN> crosscheck backup completed  after "trunc(sysdate)";
crosscheck backup completed  after "trunc(sysdate)";
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=245 instance=RACDB1 device type=DISK
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/BACKUPSET/2025_06_18/annnf0_tag20250618t143542_0.473.1204122943 RECID=337 STAMP=1204122943
crosschecked backup piece: found to be 'EXPIRED'
backup piece handle=/u02/RMAN_To_Disk/bs3sat9u_380_1_2 RECID=344 STAMP=1204123823
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.442.1204122947 RECID=338 STAMP=1204122946
crosschecked backup piece: found to be 'EXPIRED'
backup piece handle=/u02/RMAN_To_Disk/bt3sata2_381_1_2 RECID=345 STAMP=1204123825
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/1476C653214704CFE0635A38A8C08494/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.453.1204123013 RECID=339 STAMP=1204123012
crosschecked backup piece: found to be 'EXPIRED'
backup piece handle=/u02/RMAN_To_Disk/bu3satc3_382_1_2 RECID=346 STAMP=1204123826
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/339BC12E8011538DE0635A38A8C0C92A/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.460.1204123057 RECID=340 STAMP=1204123057
crosschecked backup piece: found to be 'EXPIRED'
backup piece handle=/u02/RMAN_To_Disk/bv3satdh_383_1_2 RECID=347 STAMP=1204123827
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/14769E258FBB5FD8E0635A38A8C09D43/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.349.1204123103 RECID=341 STAMP=1204123102
crosschecked backup piece: found to be 'EXPIRED'
backup piece handle=/u02/RMAN_To_Disk/c03sateu_384_1_2 RECID=348 STAMP=1204123828
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/BACKUPSET/2025_06_18/annnf0_tag20250618t143909_0.492.1204123149 RECID=342 STAMP=1204123149
crosschecked backup piece: found to be 'EXPIRED'
backup piece handle=/u02/RMAN_To_Disk/c13satgd_385_1_2 RECID=349 STAMP=1204123829
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/AUTOBACKUP/2025_06_18/s_1204123150.388.1204123151 RECID=343 STAMP=1204123150
crosschecked backup piece: found to be 'EXPIRED'
backup piece handle=/u02/RMAN_To_Disk/c23satge_386_1_2 RECID=350 STAMP=1204123830
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/AUTOBACKUP/2025_06_18/s_1204123831.443.1204123831 RECID=351 STAMP=1204123831
Crosschecked 15 objects



RMAN>

RMAN> delete noprompt expired backup;
delete noprompt expired backup;
using channel ORA_DISK_1

List of Backup Pieces
BP Key  BS Key  Pc# Cp# Status      Device Type Piece Name
------- ------- --- --- ----------- ----------- ----------
344     337     1   2   EXPIRED     DISK        /u02/RMAN_To_Disk/bs3sat9u_380_1_2
345     338     1   2   EXPIRED     DISK        /u02/RMAN_To_Disk/bt3sata2_381_1_2
346     339     1   2   EXPIRED     DISK        /u02/RMAN_To_Disk/bu3satc3_382_1_2
347     340     1   2   EXPIRED     DISK        /u02/RMAN_To_Disk/bv3satdh_383_1_2
348     341     1   2   EXPIRED     DISK        /u02/RMAN_To_Disk/c03sateu_384_1_2
349     342     1   2   EXPIRED     DISK        /u02/RMAN_To_Disk/c13satgd_385_1_2
350     343     1   2   EXPIRED     DISK        /u02/RMAN_To_Disk/c23satge_386_1_2
deleted backup piece
backup piece handle=/u02/RMAN_To_Disk/bs3sat9u_380_1_2 RECID=344 STAMP=1204123823
deleted backup piece
backup piece handle=/u02/RMAN_To_Disk/bt3sata2_381_1_2 RECID=345 STAMP=1204123825
deleted backup piece
backup piece handle=/u02/RMAN_To_Disk/bu3satc3_382_1_2 RECID=346 STAMP=1204123826
deleted backup piece
backup piece handle=/u02/RMAN_To_Disk/bv3satdh_383_1_2 RECID=347 STAMP=1204123827
deleted backup piece
backup piece handle=/u02/RMAN_To_Disk/c03sateu_384_1_2 RECID=348 STAMP=1204123828
deleted backup piece
backup piece handle=/u02/RMAN_To_Disk/c13satgd_385_1_2 RECID=349 STAMP=1204123829
deleted backup piece
backup piece handle=/u02/RMAN_To_Disk/c23satge_386_1_2 RECID=350 STAMP=1204123830
Deleted 7 EXPIRED objects



RMAN>

RMAN's LIST BACKUP command on srv1 does list the Copy #2 backups to filesystem /u02/RMAN_To_Disk that exist only on srv2.

However, the CROSSCHECK BACKUP command marks them as "EXPIRED" as it cannot "see" (i.e find) the Backup Pieces on srv1.

I can "reCatalog" them from srv2.

[oracle@srv2 RMAN_To_Disk]$ pwd
/u02/RMAN_To_Disk
[oracle@srv2 RMAN_To_Disk]$ rman target /

Recovery Manager: Release 19.0.0.0.0 - Production on Wed Jun 18 15:12:33 2025
Version 19.25.0.0.0

Copyright (c) 1982, 2019, Oracle and/or its affiliates.  All rights reserved.

connected to target database: RACDB (DBID=1162136313)

RMAN> crosscheck backup completed after "trunc(sysdate)";
crosscheck backup completed after "trunc(sysdate)";
using channel ORA_DISK_1
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/BACKUPSET/2025_06_18/annnf0_tag20250618t143542_0.473.1204122943 RECID=337 STAMP=1204122943
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.442.1204122947 RECID=338 STAMP=1204122946
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/1476C653214704CFE0635A38A8C08494/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.453.1204123013 RECID=339 STAMP=1204123012
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/339BC12E8011538DE0635A38A8C0C92A/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.460.1204123057 RECID=340 STAMP=1204123057
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/14769E258FBB5FD8E0635A38A8C09D43/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.349.1204123103 RECID=341 STAMP=1204123102
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/BACKUPSET/2025_06_18/annnf0_tag20250618t143909_0.492.1204123149 RECID=342 STAMP=1204123149
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/AUTOBACKUP/2025_06_18/s_1204123150.388.1204123151 RECID=343 STAMP=1204123150
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/AUTOBACKUP/2025_06_18/s_1204123831.443.1204123831 RECID=351 STAMP=1204123831
Crosschecked 8 objects



RMAN>

RMAN> catalog start with '/u02/RMAN_To_Disk';
catalog start with '/u02/RMAN_To_Disk';
searching for all files that match the pattern /u02/RMAN_To_Disk

List of Files Unknown to the Database
=====================================
File Name: /u02/RMAN_To_Disk/bs3sat9u_380_1_2
File Name: /u02/RMAN_To_Disk/bt3sata2_381_1_2
File Name: /u02/RMAN_To_Disk/bu3satc3_382_1_2
File Name: /u02/RMAN_To_Disk/bv3satdh_383_1_2
File Name: /u02/RMAN_To_Disk/c03sateu_384_1_2
File Name: /u02/RMAN_To_Disk/c13satgd_385_1_2
File Name: /u02/RMAN_To_Disk/c23satge_386_1_2

Do you really want to catalog the above files (enter YES or NO)? YES
cataloging files...
cataloging done

List of Cataloged Files
=======================
File Name: /u02/RMAN_To_Disk/bs3sat9u_380_1_2
File Name: /u02/RMAN_To_Disk/bt3sata2_381_1_2
File Name: /u02/RMAN_To_Disk/bu3satc3_382_1_2
File Name: /u02/RMAN_To_Disk/bv3satdh_383_1_2
File Name: /u02/RMAN_To_Disk/c03sateu_384_1_2
File Name: /u02/RMAN_To_Disk/c13satgd_385_1_2
File Name: /u02/RMAN_To_Disk/c23satge_386_1_2


RMAN>
RMAN> crosscheck backup completed after "trunc(sysdate)";
crosscheck backup completed after "trunc(sysdate)";
using channel ORA_DISK_1
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/BACKUPSET/2025_06_18/annnf0_tag20250618t143542_0.473.1204122943 RECID=337 STAMP=1204122943
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=/u02/RMAN_To_Disk/bs3sat9u_380_1_2 RECID=352 STAMP=1204125222
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.442.1204122947 RECID=338 STAMP=1204122946
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=/u02/RMAN_To_Disk/bt3sata2_381_1_2 RECID=353 STAMP=1204125222
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/1476C653214704CFE0635A38A8C08494/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.453.1204123013 RECID=339 STAMP=1204123012
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=/u02/RMAN_To_Disk/bu3satc3_382_1_2 RECID=354 STAMP=1204125222
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/339BC12E8011538DE0635A38A8C0C92A/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.460.1204123057 RECID=340 STAMP=1204123057
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=/u02/RMAN_To_Disk/bv3satdh_383_1_2 RECID=355 STAMP=1204125222
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/14769E258FBB5FD8E0635A38A8C09D43/BACKUPSET/2025_06_18/nnndf0_tag20250618t143546_0.349.1204123103 RECID=341 STAMP=1204123102
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=/u02/RMAN_To_Disk/c03sateu_384_1_2 RECID=356 STAMP=1204125222
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/BACKUPSET/2025_06_18/annnf0_tag20250618t143909_0.492.1204123149 RECID=342 STAMP=1204123149
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=/u02/RMAN_To_Disk/c13satgd_385_1_2 RECID=357 STAMP=1204125222
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/AUTOBACKUP/2025_06_18/s_1204123150.388.1204123151 RECID=343 STAMP=1204123150
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=/u02/RMAN_To_Disk/c23satge_386_1_2 RECID=358 STAMP=1204125222
crosschecked backup piece: found to be 'AVAILABLE'
backup piece handle=+FRA/RACDB/AUTOBACKUP/2025_06_18/s_1204123831.443.1204123831 RECID=351 STAMP=1204123831
Crosschecked 15 objects



RMAN>

Thus even though I executed a "DELETE" from srv1, I can re-Catalog them because the BackupPieces of these Copy #2 Backups still exist on filesystem /u02/RMAN_To_Disk on srv2.

01 May, 2025

Backup and Restore a Standby Database

I have seen some I.T. managers that decide to backup only the Primary Database and not the Standby. The logic is "if the Storage or Server for the Standby go down, we can rebuild the database from the Primary". OR "we haven't allocated storage / tape drive space at the Standby site" OR "our third-party backup tool does not know how to backup a Standby database and handle the warning about Archive Logs that is generated when it issues a "PLUS ARCHIVELOG" {see the warning below when I run the backup command)

Do they factor the time that is required to run Backup, Copy, Restore commands OR run the Duplicate command to rebuild the Standby ? All that while their Critical database is running without a Standby -- without a D.R. site.

Given a moderately large Database, it can be faster to restore from a "local" Backup at the Standby then to copy / duplicate across the network. Also, this method does NOT require rebuilding DataGuard Broker configuration.

Firstly, you CAN backup a Standby even while Recovery (i.e. Redo Apply) is running. The only catch is the "PLUS ARCHIVELOG" clause in "BACKUP ... DATABASE PLUS ARCHIVELOG" returns a minor error because a Standby cannot issue "ALTER SYSTEM ARCHIVE LOG CURRENT" (or "ALTER SYSTEM SWITCH LOGFILE")

Here's my Backup command at the Standby (while Redo Apply -- i.e. Media Recovery -- is running) without issuing a CANCEL RECOVERY.

RMAN> backup as compressed backupset
2> database
3> format '/tmp/STDBY_Backup/DB_DataFiles_%U.bak'
4> plus archivelog
5> format '/tmp/STDBY_Backup/DB_ArchLogs_%U.bak';
....
....
RMAN> backup current controlfile
2> format '/tmp/STDBY_Backup/standby_controlfile.bak';

So, when I run the Backup, it starts of with and also ends with :

RMAN-06820: warning: failed to archive current log at primary database
cannot connect to remote database
....
....
....
RMAN-06820: warning: failed to archive current log at primary database
cannot connect to remote database
using channel ORA_DISK_1
specification does not match any archived log in the repository
backup cancelled because there are no files to backup

because it cannot issue an "ALTER DATABASE ARCHIVE LOG COMMAND" -- which can only be done at a Primary. These warnings do not trouble me.

A LIST BACKUP command at the Standby *does* show Backups created locally (it will not show Backups at the Primary unless I connect to the same Recovery Catalog that is being used by the Primary) ( I have excluded listing each ArchiveLog / Datafile from the output here)

RMAN> list backup;
list backup;
using target database control file instead of recovery catalog

List of Backup Sets
===================

BS Key  Size       Device Type Elapsed Time Completion Time
------- ---------- ----------- ------------ ---------------
311     44.10M     DISK        00:00:02     01-MAY-25
        BP Key: 311   Status: AVAILABLE  Compressed: YES  Tag: TAG20250501T074832
        Piece Name: /tmp/STDBY_Backup/DB_ArchLogs_ad3objeg_333_1_1.bak

  List of Archived Logs in backup set 311
  Thrd Seq     Low SCN    Low Time  Next SCN   Next Time
  ---- ------- ---------- --------- ---------- ---------
  1    393     11126161   01-MAY-25 11126287   01-MAY-25
  1    394     11126287   01-MAY-25 11127601   01-MAY-25
...
...
  2    338     11126158   01-MAY-25 11126290   01-MAY-25
  2    339     11126290   01-MAY-25 11127596   01-MAY-25

BS Key  Type LV Size       Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
312     Full    1.07G      DISK        00:00:57     01-MAY-25
        BP Key: 312   Status: AVAILABLE  Compressed: YES  Tag: TAG20250501T074835
        Piece Name: /tmp/STDBY_Backup/DB_DataFiles_ae3objej_334_1_1.bak
  List of Datafiles in backup set 312
  File LV Type Ckp SCN    Ckp Time  Abs Fuz SCN Sparse Name
  ---- -- ---- ---------- --------- ----------- ------ ----
....
....

BS Key  Type LV Size       Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
313     Full    831.00M    DISK        00:00:43     01-MAY-25
        BP Key: 313   Status: AVAILABLE  Compressed: YES  Tag: TAG20250501T074835
        Piece Name: /tmp/STDBY_Backup/DB_DataFiles_af3objgk_335_1_1.bak
  List of Datafiles in backup set 313
  Container ID: 3, PDB Name: PDB1
  File LV Type Ckp SCN    Ckp Time  Abs Fuz SCN Sparse Name
  ---- -- ---- ---------- --------- ----------- ------ ----
....
....

BS Key  Type LV Size       Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
314     Full    807.77M    DISK        00:00:42     01-MAY-25
        BP Key: 314   Status: AVAILABLE  Compressed: YES  Tag: TAG20250501T074835
        Piece Name: /tmp/STDBY_Backup/DB_DataFiles_ag3obji1_336_1_1.bak
  List of Datafiles in backup set 314
  Container ID: 5, PDB Name: TSTPDB
  File LV Type Ckp SCN    Ckp Time  Abs Fuz SCN Sparse Name
  ---- -- ---- ---------- --------- ----------- ------ ----
....
....

BS Key  Type LV Size       Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
315     Full    807.75M    DISK        00:00:43     01-MAY-25
        BP Key: 315   Status: AVAILABLE  Compressed: YES  Tag: TAG20250501T074835
        Piece Name: /tmp/STDBY_Backup/DB_DataFiles_ah3objje_337_1_1.bak
  List of Datafiles in backup set 315
  Container ID: 2, PDB Name: PDB$SEED
  File LV Type Ckp SCN    Ckp Time  Abs Fuz SCN Sparse Name
  ---- -- ---- ---------- --------- ----------- ------ ----
....
....

BS Key  Type LV Size       Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
317     Full    19.58M     DISK        00:00:01     01-MAY-25
        BP Key: 317   Status: AVAILABLE  Compressed: NO  Tag: TAG20250501T075522
        Piece Name: /tmp/STDBY_Backup/standby_controlfile.bak
  Standby Control File Included: Ckp SCN: 11128626     Ckp time: 01-MAY-25

RMAN>

So I can confirm that I have *local* backups (including ArchiveLogs present at the Standby and backed up before the Datafile backup begins). The last ArchiveLog backed up at the Standby is SEQ#394 for Thread#1 and SEQ#339 for Thread#2

Meanwhile, the Standby has already applied subsequent ArchiveLogs as Recovery had not been cancelled.

Now I simulate loss / corruption of the filesystem holding the Standby datafiles and controlfiles and attempt a Restore (if the Standby Redo Logs are also lost, I must add them again later before I resume recovery).

I do a SHUTDOWN ABORT at the Standby if he instance seems to be running.

(not shown here)

First I stop Redo Shipping from the Primary

DGMGRL> connect sys
Password:
Connected to "RACDB"
Connected as SYSDBA.
DGMGRL> EDIT DATABASE 'RACDB' SET STATE='TRANSPORT-OFF';
Succeeded.
DGMGRL>

Next I Restore the *standby* controlfile at my Standby server (note that I connect to "target" and specify "standby controlfile"). Note : If my SPFILE or PFILE is not available at the Standby, I have to restore that as well before I STARTUP NOMOUNT.

[oracle@stdby ~]$ rman target /

Recovery Manager: Release 19.0.0.0.0 - Production on Thu May 1 08:27:23 2025
Version 19.25.0.0.0

Copyright (c) 1982, 2019, Oracle and/or its affiliates.  All rights reserved.

connected to target database (not started)

RMAN> startup nomount;
startup nomount;
Oracle instance started

Total System Global Area    2147480256 bytes

Fixed Size                     9179840 bytes
Variable Size                486539264 bytes
Database Buffers            1644167168 bytes
Redo Buffers                   7593984 bytes


RMAN> restore standby controlfile from '/tmp/STDBY_Backup/standby_controlfile.bak';
restore standby controlfile from '/tmp/STDBY_Backup/standby_controlfile.bak';
Starting restore at 01-MAY-25
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=310 device type=DISK

channel ORA_DISK_1: restoring control file
channel ORA_DISK_1: restore complete, elapsed time: 00:00:01
output file name=/Standby_DB/oradata/control01.ctl
output file name=/Standby_DB/FRA/control02.ctl
Finished restore at 01-MAY-25


RMAN>

I am now ready to CATALOG the Backups and RESTORE the Database

RMAN> alter database mount;
alter database mount;
released channel: ORA_DISK_1
Statement processed


RMAN> catalog start with '/tmp/STDBY_Backup';
catalog start with '/tmp/STDBY_Backup';
Starting implicit crosscheck backup at 01-MAY-25
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=11 device type=DISK
Crosschecked 13 objects
Finished implicit crosscheck backup at 01-MAY-25

Starting implicit crosscheck copy at 01-MAY-25
using channel ORA_DISK_1
Finished implicit crosscheck copy at 01-MAY-25

searching for all files in the recovery area
cataloging files...
no files cataloged

searching for all files that match the pattern /tmp/STDBY_Backup

List of Files Unknown to the Database
=====================================
File Name: /tmp/STDBY_Backup/standby_controlfile.bak

Do you really want to catalog the above files (enter YES or NO)? YES
cataloging files...
cataloging done

List of Cataloged Files
=======================
File Name: /tmp/STDBY_Backup/standby_controlfile.bak


RMAN>

In this case, the Standby Controlfile backup was taken *after* the Datafile and ArchiveLog backups, so this Controlfile is already "aware" of the backups (they are already included in the controlfile). Neverthless, I can do some verification : ( I have excluded listing each ArchiveLog / Datafile from the output here)

RMAN> list backup ;
list backup ;

List of Backup Sets
===================


BS Key  Size       Device Type Elapsed Time Completion Time
------- ---------- ----------- ------------ ---------------
311     44.10M     DISK        00:00:02     01-MAY-25
        BP Key: 311   Status: AVAILABLE  Compressed: YES  Tag: TAG20250501T074832
        Piece Name: /tmp/STDBY_Backup/DB_ArchLogs_ad3objeg_333_1_1.bak

BS Key  Type LV Size       Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
312     Full    1.07G      DISK        00:00:57     01-MAY-25

BS Key  Type LV Size       Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
313     Full    831.00M    DISK        00:00:43     01-MAY-25

BS Key  Type LV Size       Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
314     Full    807.77M    DISK        00:00:42     01-MAY-25

BS Key  Type LV Size       Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
315     Full    807.75M    DISK        00:00:43     01-MAY-25

BS Key  Type LV Size       Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
316     Full    19.61M     DISK        00:00:01     01-MAY-25

BS Key  Type LV Size       Device Type Elapsed Time Completion Time
------- ---- -- ---------- ----------- ------------ ---------------
317     Full    19.58M     DISK        00:00:01     01-MAY-25
        BP Key: 317   Status: AVAILABLE  Compressed: NO  Tag: TAG20250501T075522
        Piece Name: /tmp/STDBY_Backup/standby_controlfile.bak
  Standby Control File Included: Ckp SCN: 11128626     Ckp time: 01-MAY-25


RMAN>

For good measure, I can also verify that this "database" is a Standby (only the controlfile is presently restored" is a *Standby Database* (that a database is a Primary or a Standby is information in the *Controlfile*, not in the Datafiles)

RMAN> exit
exit

RMAN Client Diagnostic Trace file : /u01/app/oracle/diag/clients/user_oracle/host_4144547424_110/trace/ora_4560_140406053321216.trc

Recovery Manager complete.
[oracle@stdby ~]$ sqlplus / as sysdba

SQL*Plus: Release 19.0.0.0.0 - Production on Thu May 1 08:37:54 2025
Version 19.25.0.0.0

Copyright (c) 1982, 2024, Oracle.  All rights reserved.


Connected to:
Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Version 19.25.0.0.0

SQL> select open_mode, database_role from v$database;

OPEN_MODE            DATABASE_ROLE
-------------------- ----------------
MOUNTED              PHYSICAL STANDBY

SQL>

I can return to RMAN and RESTORE the Database. (I still invoke RMAN to connect to "target", not "auxiliary"

SQL> exit
Disconnected from Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Version 19.25.0.0.0
[oracle@stdby ~]$ rman target /

Recovery Manager: Release 19.0.0.0.0 - Production on Thu May 1 08:40:32 2025
Version 19.25.0.0.0

Copyright (c) 1982, 2019, Oracle and/or its affiliates.  All rights reserved.

connected to target database: RACDB (DBID=1162136313, not open)

RMAN> 
RMAN> restore database;
restore database;
Starting restore at 01-MAY-25
using target database control file instead of recovery catalog
allocated channel: ORA_DISK_1
channel ORA_DISK_1: SID=2 device type=DISK

channel ORA_DISK_1: starting datafile backup set restore
channel ORA_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_DISK_1: restoring datafile 00001 to /Standby_DB/oradata/STDBY/datafile/o1_mf_system_m33j9fqn_.dbf
...
...
...
channel ORA_DISK_1: specifying datafile(s) to restore from backup set
channel ORA_DISK_1: restoring datafile 00005 to /Standby_DB/oradata/STDBY/14769E258FBB5FD8E0635A38A8C09D43/datafile/o1_mf_system_m33jb79n_.dbf
channel ORA_DISK_1: restoring datafile 00006 to /Standby_DB/oradata/STDBY/14769E258FBB5FD8E0635A38A8C09D43/datafile/o1_mf_sysaux_m33jbbgz_.dbf
channel ORA_DISK_1: restoring datafile 00008 to /Standby_DB/oradata/STDBY/14769E258FBB5FD8E0635A38A8C09D43/datafile/o1_mf_undotbs1_m33jbgrs_.dbf
channel ORA_DISK_1: reading from backup piece /tmp/STDBY_Backup/DB_DataFiles_ah3objje_337_1_1.bak
channel ORA_DISK_1: piece handle=/tmp/STDBY_Backup/DB_DataFiles_ah3objje_337_1_1.bak tag=TAG20250501T074835
channel ORA_DISK_1: restored backup piece 1
channel ORA_DISK_1: restore complete, elapsed time: 00:00:45
Finished restore at 01-MAY-25


RMAN>

Next, I restore the ArchiveLogs that I have in the local backup instead of having to wait for them to be shipped from the Primary during the Recover Phase

RMAN> restore archivelog from time "trunc(sysdate)";
restore archivelog from time "trunc(sysdate)";
Starting restore at 01-MAY-25
using channel ORA_DISK_1

channel ORA_DISK_1: starting archived log restore to default destination
channel ORA_DISK_1: restoring archived log
archived log thread=1 sequence=391
channel ORA_DISK_1: restoring archived log
archived log thread=1 sequence=392
channel ORA_DISK_1: restoring archived log
archived log thread=2 sequence=336
channel ORA_DISK_1: restoring archived log
archived log thread=2 sequence=337
channel ORA_DISK_1: restoring archived log
archived log thread=2 sequence=338
channel ORA_DISK_1: restoring archived log
archived log thread=1 sequence=393
channel ORA_DISK_1: restoring archived log
archived log thread=1 sequence=394
channel ORA_DISK_1: restoring archived log
archived log thread=2 sequence=339
channel ORA_DISK_1: reading from backup piece /tmp/STDBY_Backup/DB_ArchLogs_ad3objeg_333_1_1.bak
channel ORA_DISK_1: piece handle=/tmp/STDBY_Backup/DB_ArchLogs_ad3objeg_333_1_1.bak tag=TAG20250501T074832
channel ORA_DISK_1: restored backup piece 1
channel ORA_DISK_1: restore complete, elapsed time: 00:00:03
Finished restore at 01-MAY-25


RMAN>
RMAN>  list archivelog all completed after "trunc(sysdate)";
 list archivelog all completed after "trunc(sysdate)";
List of Archived Log Copies for database with db_unique_name STDBY
=====================================================================

Key     Thrd Seq     S Low Time
------- ---- ------- - ---------
675     1    391     A 27-APR-25
        Name: /Standby_DB/FRA/STDBY/archivelog/2025_05_01/o1_mf_1_391_n16fcchs_.arc

667     1    391     A 27-APR-25
        Name: /Standby_DB/FRA/STDBY/archivelog/2025_05_01/o1_mf_1_391_n169cng5_.arc

682     1    392     A 01-MAY-25
        Name: /Standby_DB/FRA/STDBY/archivelog/2025_05_01/o1_mf_1_392_n16fcbh7_.arc

670     1    392     A 01-MAY-25
        Name: /Standby_DB/FRA/STDBY/archivelog/2025_05_01/o1_mf_1_392_n169fh7s_.arc

678     1    393     A 01-MAY-25
        Name: /Standby_DB/FRA/STDBY/archivelog/2025_05_01/o1_mf_1_393_n16fcckd_.arc

671     1    393     A 01-MAY-25
        Name: /Standby_DB/FRA/STDBY/archivelog/2025_05_01/o1_mf_1_393_n169g77l_.arc

677     1    394     A 01-MAY-25
        Name: /Standby_DB/FRA/STDBY/archivelog/2025_05_01/o1_mf_1_394_n16fccjb_.arc

674     1    394     A 01-MAY-25
        Name: /Standby_DB/FRA/STDBY/archivelog/2025_05_01/o1_mf_1_394_n169my72_.arc

680     2    336     A 01-MAY-25
        Name: /Standby_DB/FRA/STDBY/archivelog/2025_05_01/o1_mf_2_336_n16fccnv_.arc

668     2    336     A 01-MAY-25
        Name: /Standby_DB/FRA/STDBY/archivelog/2025_05_01/o1_mf_2_336_n169d0fm_.arc

681     2    337     A 01-MAY-25
        Name: /Standby_DB/FRA/STDBY/archivelog/2025_05_01/o1_mf_2_337_n16fcbhy_.arc

669     2    337     A 01-MAY-25
        Name: /Standby_DB/FRA/STDBY/archivelog/2025_05_01/o1_mf_2_337_n169fh6j_.arc

679     2    338     A 01-MAY-25
        Name: /Standby_DB/FRA/STDBY/archivelog/2025_05_01/o1_mf_2_338_n16fccm6_.arc

672     2    338     A 01-MAY-25
        Name: /Standby_DB/FRA/STDBY/archivelog/2025_05_01/o1_mf_2_338_n169g790_.arc

676     2    339     A 01-MAY-25
        Name: /Standby_DB/FRA/STDBY/archivelog/2025_05_01/o1_mf_2_339_n16fcchw_.arc

673     2    339     A 01-MAY-25
        Name: /Standby_DB/FRA/STDBY/archivelog/2025_05_01/o1_mf_2_339_n169mxfp_.arc



RMAN>

(the output shows duplicate entries if either the ArchiveLogs were already present at the Standby OR the Restore was executed twice)

So, I also have the ArchiveLogs now.

I add Standby Logs first (Add for each Thread in the Primary, and at the same size as Online Logs at the Primary)

RMAN> exit
exit

sqlRMAN Client Diagnostic Trace file : /u01/app/oracle/diag/clients/user_oracle/host_4144547424_110/trace/ora_5380_139777366395392.trc

Recovery Manager complete.
[oracle@stdby ~]$ sqlplus / as sysdba

SQL> select thread#, group# from v$standby_log;

   THREAD#     GROUP#
---------- ----------
         1          5
         2          6
         0          7
         1          8
         1          9
         1         10
         2         11
         2         12

8 rows selected.

SQL> alter database drop standby logfile group 5;

Database altered.

SQL> alter database drop standby logfile group 6;

Database altered.

SQL> alter database drop standby logfile group 7;

Database altered.

SQL> alter database drop standby logfile group 8;
alter database drop standby logfile group 8
*
ERROR at line 1:
ORA-00313: open failed for members of log group 8 of thread 1
ORA-00312: online log 8 thread 1: '/Standby_DB/FRA/STDBY/onlinelog/o1_mf_8_mb6rdbos_.log'
ORA-27037: unable to obtain file status
Linux-x86_64 Error: 2: No such file or directory
Additional information: 7
ORA-00312: online log 8 thread 1: '/Standby_DB/oradata/STDBY/onlinelog/o1_mf_8_mb6rd9h8_.log'
ORA-27037: unable to obtain file status
Linux-x86_64 Error: 2: No such file or directory
Additional information: 7


SQL> alter database drop standby logfile group 9;

Database altered.

SQL> alter database drop standby logfile group 10;

Database altered.

SQL> alter database drop standby logfile group 11;
alter database drop standby logfile group 11
*
ERROR at line 1:
ORA-00313: open failed for members of log group 11 of thread 2
ORA-00312: online log 11 thread 2: '/Standby_DB/FRA/STDBY/onlinelog/o1_mf_11_mb6rf8ob_.log'
ORA-27037: unable to obtain file status
Linux-x86_64 Error: 2: No such file or directory
Additional information: 7
ORA-00312: online log 11 thread 2: '/Standby_DB/oradata/STDBY/onlinelog/o1_mf_11_mb6rf7hs_.log'
ORA-27037: unable to obtain file status
Linux-x86_64 Error: 2: No such file or directory
Additional information: 7


SQL> alter database drop standby logfile group 12;

Database altered.

SQL>
SQL> select thread#, group# from v$standby_log;

   THREAD#     GROUP#
---------- ----------
         1          8
         2         11

SQL>
SQL> alter database clear logfile group 8;

Database altered.

SQL> alter database clear logfile group 11;

Database altered.

SQL>
SQL> alter database drop standby logfile group 8;

Database altered.

SQL>  alter database drop standby logfile group 11;

Database altered.

SQL> select thread#, group# from v$standby_log;

no rows selected

SQL>
SQL> alter database add standby logfile thread 1 size 512M;

Database altered.

SQL> alter database add standby logfile thread 1 size 512M;

Database altered.

SQL> alter database add standby logfile thread 2 size 512M;

Database altered.

SQL> alter database add standby logfile thread 2 size 512M;

Database altered.

SQL> alter database add standby logfile thread 2 size 512M;

Database altered.

SQL>
SQL> select thread#, group# from v$standby_log order by 1,2;

   THREAD#     GROUP#
---------- ----------
         1          5
         1          6
         1          7
         2          8
         2          9
         2         10

6 rows selected.

SQL>

I have to clear and then drop and recreate one Standby Log of each Thread that were last being used just before all the files were lost -- so the controlfile expected Group 8 and Group 11 to be present. These were the entries in the alert log for the last set of Recover commands before the storage was lost :

2025-05-01T08:10:41.554409+00:00
Recovery of Online Redo Log: Thread 2 Group 11 Seq 343 Reading mem 0
  Mem# 0: /Standby_DB/oradata/STDBY/onlinelog/o1_mf_11_mb6rf7hs_.log
  Mem# 1: /Standby_DB/FRA/STDBY/onlinelog/o1_mf_11_mb6rf8ob_.log
2025-05-01T08:10:41.557828+00:00
ARC1 (PID:1813): Archived Log entry 680 added for B-1164519547.T-1.S-397 LOS:0x0000000000a9f8a3 NXS:0x0000000000a9f8d2 NAB:12 ID 0x46c5be03 LAD:1
2025-05-01T08:10:41.563027+00:00
 rfs (PID:1825): Selected LNO:8 for T-1.S-398 dbid 1162136313 branch 1164519547
2025-05-01T08:10:41.642227+00:00
PR00 (PID:1863): Media Recovery Waiting for T-1.S-398 (in transit)
2025-05-01T08:10:41.642508+00:00
Recovery of Online Redo Log: Thread 1 Group 8 Seq 398 Reading mem 0
  Mem# 0: /Standby_DB/oradata/STDBY/onlinelog/o1_mf_8_mb6rd9h8_.log
  Mem# 1: /Standby_DB/FRA/STDBY/onlinelog/o1_mf_8_mb6rdbos_.log
2025-05-01T08:14:02.648081+00:00
Shutting down ORACLE instance (abort) (OS id: 3584)

Now I can begin Recovery of the Standby

SQL> alter database recover managed standby database using current logfile disconnect from session;

Database altered.

SQL>
SQL> shutdown immediate;
ORA-01109: database not open


Database dismounted.
ORACLE instance shut down.
SQL> 
SQL> startup mount;
ORACLE instance started.

Total System Global Area 2147480256 bytes
Fixed Size                  9179840 bytes
Variable Size             486539264 bytes
Database Buffers         1644167168 bytes
Redo Buffers                7593984 bytes
Database mounted.
SQL> alter database recover managed standby database using current logfile disconnect from session;

Database altered.

SQL> exit

I resume Redo Shipping from the Primary

[oracle@srv1 ~]$ dgmgrl
DGMGRL for Linux: Release 19.0.0.0.0 - Production on Thu May 1 09:11:56 2025
Version 19.25.0.0.0

Copyright (c) 1982, 2019, Oracle and/or its affiliates.  All rights reserved.

Welcome to DGMGRL, type "help" for information.
DGMGRL> connect sys
Password:
Connected to "RACDB"
Connected as SYSDBA.
DGMGRL> EDIT DATABASE 'RACDB' SET STATE='TRANSPORT-ON';
Succeeded.
DGMGRL>
DGMGRL> show configuration;

Configuration - racdb_dg

  Protection Mode: MaxPerformance
  Members:
  racdb - Primary database
    stdby - Physical standby database

Fast-Start Failover:  Disabled

Configuration Status:
SUCCESS   (status updated 34 seconds ago)

DGMGRL> show configuration lag;

Configuration - racdb_dg

  Protection Mode: MaxPerformance
  Members:
  racdb - Primary database
    stdby - Physical standby database
            Transport Lag:      0 seconds (computed 1 second ago)
            Apply Lag:          0 seconds (computed 1 second ago)

Fast-Start Failover:  Disabled

Configuration Status:
SUCCESS   (status updated 37 seconds ago)

DGMGRL>

Note : I have to wait for a few seconds to a few minutes for the SHOW CONFIGURATION and SHOW CONFIGURATION LAG commands to return the correct information. Initially, they may show that there are errors but once Primary and Standby are "talking to each other", these errors would clear.

Now my Standby is syncing with the Primary

2025-05-01T09:19:30.530588+00:00
Recovery of Online Redo Log: Thread 2 Group 8 Seq 344 Reading mem 0
  Mem# 0: /Standby_DB/oradata/STDBY/onlinelog/o1_mf_8_n16gb9wm_.log
  Mem# 1: /Standby_DB/FRA/STDBY/onlinelog/o1_mf_8_n16gbb4m_.log
2025-05-01T09:19:30.611573+00:00
 rfs (PID:7642): krsr_rfs_atc: Identified database type as 'PHYSICAL': Client is ASYNC (PID:11557)
2025-05-01T09:19:30.623795+00:00
 rfs (PID:7642): Selected LNO:5 for T-1.S-399 dbid 1162136313 branch 1164519547
2025-05-01T09:19:30.631133+00:00
PR00 (PID:7486): Media Recovery Waiting for T-1.S-399 (in transit)
2025-05-01T09:19:30.631475+00:00
Recovery of Online Redo Log: Thread 1 Group 5 Seq 399 Reading mem 0
  Mem# 0: /Standby_DB/oradata/STDBY/onlinelog/o1_mf_5_n16g90qv_.log
  Mem# 1: /Standby_DB/FRA/STDBY/onlinelog/o1_mf_5_n16g910n_.log
2025-05-01T09:20:51.263052+00:00
ARC2 (PID:7470): Archived Log entry 691 added for B-1164519547.T-2.S-344 LOS:0x0000000000aa394b NXS:0x0000000000aa3b02 NAB:102 ID 0x46c5be03 LAD:1
2025-05-01T09:20:51.274060+00:00
 rfs (PID:7640): Selected LNO:8 for T-2.S-345 dbid 1162136313 branch 1164519547
2025-05-01T09:20:51.285312+00:00
PR00 (PID:7486): Media Recovery Log /Standby_DB/FRA/STDBY/archivelog/2025_05_01/o1_mf_2_344_n16h7m85_.arc
PR00 (PID:7486): Media Recovery Waiting for T-2.S-345 (in transit)
2025-05-01T09:20:51.387005+00:00
Recovery of Online Redo Log: Thread 2 Group 8 Seq 345 Reading mem 0
  Mem# 0: /Standby_DB/oradata/STDBY/onlinelog/o1_mf_8_n16gb9wm_.log
  Mem# 1: /Standby_DB/FRA/STDBY/onlinelog/o1_mf_8_n16gbb4m_.log
2025-05-01T09:20:51.433894+00:00
ARC0 (PID:7462): Archived Log entry 692 added for B-1164519547.T-1.S-399 LOS:0x0000000000aa394e NXS:0x0000000000aa3b06 NAB:265 ID 0x46c5be03 LAD:1
2025-05-01T09:20:51.445431+00:00
 rfs (PID:7642): Selected LNO:5 for T-1.S-400 dbid 1162136313 branch 1164519547
2025-05-01T09:20:51.514317+00:00
PR00 (PID:7486): Media Recovery Waiting for T-1.S-400 (in transit)
2025-05-01T09:20:51.514664+00:00
Recovery of Online Redo Log: Thread 1 Group 5 Seq 400 Reading mem 0
  Mem# 0: /Standby_DB/oradata/STDBY/onlinelog/o1_mf_5_n16g90qv_.log
  Mem# 1: /Standby_DB/FRA/STDBY/onlinelog/o1_mf_5_n16g910n_.log

I see that the SEQ# have already advanced to 399 and 345 for Thread 1 and 2 respectively.

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