Determining the Schema Version of the Recovery Catalog

The schema version of the recovery catalog is stored in the recovery catalog itself. The information is important in case you maintain multiple databases of different versions in your production system, and need to determine whether the catalog schema version is usable with a specific target database version.

See Also:

Oracle Database Backup and Recovery Reference for the complete set of compatibility rules governing the RMAN environment

To determine the schema version of the recovery catalog:

Start SQL*Plus and connect to the recovery catalog database as the catalog owner. For example:
```
% sqlplus rman/cat@catdb
```
Query the RCVER table to obtain the schema version, as in the following example (sample output included):
```
SELECT *
FROM rcver;

VERSION
------------
09.02.00
```

If the table displays multiple rows, then the highest version in the RCVER table is the current catalog schema version. The table stores only the major version numbers and not the patch numbers. For example, assume that the rcver table displays the following rows:

VERSION
------------
08.01.07
09.00.01
09.02.00

These rows indicate that the catalog was created with a release 8.1.7 executable, then upgraded to release 9.0.1, and finally upgraded to release 9.2.0. The current version of the catalog schema is 9.2.0.