How to fix the Oracle error ORA-16434: Archive log for branch string thread string sequence string cannot be queued.?

In this post, you’ll learn more about the Oracle ErrorORA-16434: Archive log for branch string thread string sequence string cannot be queued. with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-16434: Archive log for branch string thread string sequence string cannot be queued.

Reason for the Error ORA-16434: Archive log for branch string thread string sequence string cannot be queued.

An archive log needed by the standby database to resolve a redo gap was not found on the primary database. This is a fatal situation during a switchover because the primary database waits for the target standby to be clear of all archive log gaps before allowing the switchover to proceed. If a redo gap cannot be resolved, the switchover cannot succeed.

How to fix the Error ORA-16434: Archive log for branch string thread string sequence string cannot be queued. ?

You can fix this error in Oracle by following the below steps

If the specified log is listed in V$ARCHIVED_LOG for the DEST_ID of the local destination on the primary database but no longer exists in that location on disk, the archived log can be copied back to that location to allow gap processing to automatically resolve the gap. If the specified log has been purged from V$ARCHIVED_LOG, the archived log can be copied to disk on either the primary or standby database and registered using the ALTER DATABASE REGISTER OR REPLACE LOGFILE command.