ORA-25408: can not safely replay call
Cause: The connection was lost while doing this call. It may not be safe to replay it after failover.
Action: Check to see if the results of the call have taken place, and then replay it if desired.
Error Type: ORA
ORA-25408: can not safely replay call
is expected, your application should handle this exception, and re-execute the insert. If you're in a transaction and failover occurs, you will also receive an error message, you've to handle this, and issue a rollback.