My Oracle Support Banner

Scheduler Stuck Executing Jobs And CJQ0 Locking SYS.LAST_OBSERVED_EVENT (Doc ID 2341386.1)

Last updated on DECEMBER 09, 2022

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 11.2 to 12.1]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Backup Service - Version N/A and later
Information in this document applies to any platform.


Scheduler jobs do not run at all and CJQ0 seems stuck after locking the object SYS.LAST_OBSERVED_EVENT.

The Scheduler trace (by the event 27402 level 65355) shows that the coordinator (CJQ0) locks the object SYS.LAST_OBSERVED_EVENT.

The scheduler trace shows an error ORA-942.



To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!

In this Document

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.