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

ORA-38851
ORA-38851: cannot mark the current instance (redo thread) as disabled
Cause: The standby switchover or failover operation failed because it needs to
mark the current instance (redo thread) as disabled.
Action: Shut down this instance and start up using a different instance name or
redo thread number and retry.
More details : Viste http://www.high-oracle/ora-38851/
More details : Viste http://www.high-oracle/ora-38851/
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