The version of the recovery catalog schema must be greater than or equal to the version of the RMAN client connecting to it. More on the
rman compatability could be found on the backup and recovery reference.
The recovery catalog schema version is not same as the database version. For example the database could be 19.7 and recovery catalog could be 19.08.00.00. Recovery catalog version could be found by connecting to the recovery catalog using sqlplus as the recovery catalog owner.
sqlplus reco/password_here
SQL*Plus: Release 19.0.0.0.0 - Production on Tue Jan 5 20:00:14 2021
Version 19.8.0.0.0
Enter password:
Last Successful login time: Tue Jan 05 2021 19:45:02 +00:00
Connected to:
Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Version 19.8.0.0.0
SQL> select * from rcver;
VERSION
---------------
19.08.00.00.00
When the recovery catalog schema version is higher than the client version following message is shown when connecting to the recovery catalog.
rman target / catalog reco@recotns
connected to target database: DB1 (DBID=123490689)
recovery catalog database Password:
connected to recovery catalog database
recovery catalog schema version 19.08.00.00. is newer than RMAN version
As recovery catalog schema is higher this is not an issue. On the other hand if rman client is higher than the recovery catalog schema following message is shown when connecting to it.
rman catalog /@recotns
Recovery Manager: Release 19.0.0.0.0 - Production on Tue Jan 5 20:33:13 2021
Version 19.9.0.0.0
Copyright (c) 1982, 2019, Oracle and/or its affiliates. All rights reserved.
connected to recovery catalog database
PL/SQL package RECOCAT.DBMS_RCVCAT version 19.08.00.00. in RCVCAT database is not current
PL/SQL package RECOCAT.DBMS_RCVMAN version 19.08.00.00 in RCVCAT database is not current
In this case client version is 19.9 and is higher than the recovery catalog schema version which is 19.08.00.00.
This happens when Oracle home is patched with RU. In this case (also mentioned as part of patch Readme document) the recovery catalog must be upgraded.
To upgrade the recovery catalog schema connect to it using rman from the higher version client and run the upgrade catalog command twice.
rman catalog /@recotns
Recovery Manager: Release 19.0.0.0.0 - Production on Tue Jan 5 20:33:13 2021
Version 19.9.0.0.0
Copyright (c) 1982, 2019, Oracle and/or its affiliates. All rights reserved.
connected to recovery catalog database
PL/SQL package RECOCAT.DBMS_RCVCAT version 19.08.00.00. in RCVCAT database is not current
PL/SQL package RECOCAT.DBMS_RCVMAN version 19.08.00.00 in RCVCAT database is not current
RMAN> UPGRADE CATALOG;
recovery catalog owner is RECO
enter UPGRADE CATALOG command again to confirm catalog upgrade
RMAN> UPGRADE CATALOG;
recovery catalog upgraded to version 19.09.00.00.00
DBMS_RCVMAN package upgraded to version 19.09.00.00
DBMS_RCVCAT package upgraded to version 19.09.00.00.
The version upgrade could be verified querying the rcver. In the below output it could be seen that recovery catalog reside in a database which is 19.8. However, the recovery catalog version is 19.09.
sqlplus /@recotns
SQL*Plus: Release 19.0.0.0.0 - Production on Tue Jan 5 21:25:17 2021
Version 19.9.0.0.0
Copyright (c) 1982, 2020, Oracle. All rights reserved.
Last Successful login time: Tue Jan 05 2021 21:15:03 +00:00
Connected to:
Oracle Database 19c Enterprise Edition Release 19.0.0.0.0 - Production
Version 19.8.0.0.0
SQL> select * from rcver;
VERSION
---------------
19.09.00.00.00
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Update on 2021-02-26
Strange behaviour was observed with recovery catalog where backups were failing with following error.
Oracle error from recovery catalog database: ORA-04063: package body "RECOCAT.DBMS_RCVMAN" has errors
ORA-06508: PL/SQL: could not find program unit being called: "RECOCAT.DBMS_RCVMAN"
recovery catalog is partially upgraded to 19.09.00.00
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of report command at 02/26/2021 00:05:04
RMAN-06429: RCVCAT database is not compatible with this version of RMAN
Both the client and the recovery catalog had the same version.
SQL> select * from rcver;
VERSION
---------------
19.09.00.00.00
rman catalog /@recotns
Recovery Manager: Release 19.0.0.0.0 - Production on Fri Feb 26 16:49:30 2021
Version 19.9.0.0.0
It's not sure why this happened. Ppossibly update catalog was run only once not twice. This cause is suspected because of "recovery catalog is partially upgraded" shown during the subsequent upgrade. MOS note
2022782.1 matched the error and list cauase as compatibility mismatch, which isn't the case. Neverthless running upgrade catalog twice (though first run gave out an error) resolved the issue.
rman catalog /@recotns
Recovery Manager: Release 19.0.0.0.0 - Production on Fri Feb 26 16:49:30 2021
Version 19.9.0.0.0
Copyright (c) 1982, 2019, Oracle and/or its affiliates. All rights reserved.
connected to recovery catalog database
recovery catalog is partially upgraded to 19.09.00.00
RMAN> UPGRADE CATALOG;
Oracle error from recovery catalog database: ORA-04063: package body "RECOCAT.DBMS_RCVMAN" has errors
ORA-06508: PL/SQL: could not find program unit being called: "RECOCAT.DBMS_RCVMAN"
recovery catalog owner is RECOCAT
enter UPGRADE CATALOG command again to confirm catalog upgrade
RMAN> UPGRADE CATALOG;
recovery catalog is partially upgraded to 19.09.00.00
recovery catalog upgraded to version 19.09.00.00.00
DBMS_RCVMAN package upgraded to version 19.09.00.00
DBMS_RCVCAT package upgraded to version 19.09.00.00.
Backups continued with recovery catalog afterwards and no issues observed.
Update on 2021-03-02
Further investigation revealed that above error was a result of running catalog upgrade command (upgrade catalog) before Datapatch (datapatch -verbose). PSU readme file clearly state that catalog upgrade should be run after datapatch.
