SYS.SCHEDULER$_EVENT_QUEUE Invalid When The Database Is Converted To Snapshot Standby.
Last updated on JULY 27, 2017
Applies to:Oracle Database - Enterprise Edition - Version 184.108.40.206 and later
Information in this document applies to any platform.
The customer has a data guard environment, everyday, they will convert the standby to physical standby at 2:00 am and back to snapshot standby at 3:30 am, the job_queue_processes parameter will be changed when the database is converted to snapshot standby.
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