ORA-16267: Cannot instantiate a Logical Standby during a switchover
Cause: An instantiation of a Logical Standby has been attempted for a primary database that is in the middle of a switchover.
Action: Execute ALTER DATABASE PREPARE TO SWITCHOVER CANCEL to cancel the switchover, and attempt the instantiation again.
ORA-16268
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ORA-16267Cannot instantiate a Logical Standby during a switchover