Sometimes You can get “RMAN-06004: ORACLE error from recovery catalog database: string ” error.
Details of error are as follows.
RMAN-06004: ORACLE error from recovery catalog database: string
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-03002: failure of show command at 06/04/2014 13:19:18
RMAN-06004: ORACLE error from recovery catalog database: ORA-20999: internal error: found non-null and null site name
Bug 18907048 : RMAN-6614 AND ORA-20999 AFTER DB_UNIQUE_NAME SETTING WITH LARGE STRING
Fixed in Product Version 12.2
Issue is solved in 12.2.
You may check for Interim Patches available
If there is urgency, the controlfile can be recreated and the database unregister/register on the catalog
Do you want to learn more details about RMAN, then read the following articles.
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