ORA-16480: operational error during far sync instance assisted failover
Cause:
After successfully connecting to the far sync instance, an error was encountered when polling the far sync instance for progress.
Action:
Check the alert log and traces of both the current database and the far sync instance for further details. Retry the operation if a problem is identified and corrected. Using the FORCE option on the failover command allows the operation to proceed and bypass the far sync instance but bypassing the far sync instance increases the potential for data loss.