Oracle Error ORA-38851: cannot mark the current instance (redo thread) as disabled

Oracle Error Message

ORA-38851: cannot mark the current instance (redo thread) as disabled

Reason for the Error

The standby switchover or failover operation failed because it needs to mark the current instance (redo thread) as disabled.

Solution

Shut down this instance and start up using a different instance name or redo thread number and retry.