ORA-38857: cannot mark redo thread [string] as enabled

Cause: The standby switchover or failover operation failed because it needs to mark a redo thread as enabled. However, the control file was recreated with a MAXINSTANCES value smaller than the thread number of the redo thread.

Action: Recreate the control file with a larger MAXINSTANCES value.

Error Type: ORA

• Additional information for ORA-38857: cannot mark redo thread [string] as enabled38857
Discussions and solutions for Oracle Database Error ORA-38857: cannot mark redo thread [string] as enabled Developer anwers for Oracle Database Error ORA-38857: cannot mark redo thread [string] as enabled FAQs for ORA-38857: cannot mark redo thread [string] as enabled search others tips for ORA-38857: cannot mark redo thread [string] as enabled