All Oracle Error CodesOracle DBA Forum

ORA-00278:

log file 'string' no longer needed for this recovery
Cause: The specified redo log file is no longer needed for the current recovery.
Action: No action required. The archived redo log file may be removed from its current location to conserve disk space, if needed. However, the redo log file may still be required for another recovery session in the future.
 SubjectReplies
1.Question on RAC user-managed recovery3
2.Open read only after incomplete recovery?2
3.Applying redo - recovery fundamentals1