Oracle Error ORA-16443: could not switch out of log string thread string

Oracle Error Message

ORA-16443: could not switch out of log string thread string

Reason for the Error

ALTER SYSTEM FLUSH REDO TO STANDBY could not switch out of the current log.

Solution

This can happen if there are one or more errors during archival of the current log at the primary database. Reissue ALTER SYSTEM FLUSH REDO TO STANDBY after resolving the archiving errors.