UPGRADE CATALOG command to upgrade a recovery catalog schema from an older version to the version required by the RMAN client.
RMAN must be connected to the recovery catalog database, which must be open, as the owner of the recovery catalog. You cannot use the UPGRADE CATALOGcommand while connected to a virtual private catalog .Only the base catalog can be upgraded.
The recovery catalog must not already be at a version greater than needed by the RMAN executable; otherwise, RMAN issues an error. RMAN displays all error messages generated during the upgrade in the message log.
如果升级失败，授予catalog schemas,create type或resources权限后再试
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