ORA-00264: No Recovery Required — What It Means and How to Handle It
ORA-00264 is an informational message returned by Oracle when a RECOVER command is issued against a database that is already in a consistent, synchronized state and requires no recovery. Rather than a fatal error, it is Oracle's way of telling the DBA that all datafile headers and the control file SCNs are already aligned. This typically occurs during routine startup procedures or automated recovery scripts that don't first validate whether recovery is actually needed.
Top 3 Causes
1. Database Was Shut Down Cleanly
When a database is shut down with SHUTDOWN NORMAL, SHUTDOWN IMMEDIATE, or SHUTDOWN TRANSACTIONAL, all dirty buffers are flushed to disk and checkpoints are completed. All SCNs are synchronized, so no redo application is needed.
