Scheduler Stuck Executing Jobs And CJQ0 Locking SYS.LAST_OBSERVED_EVENT

(Doc ID 2341386.1)

Last updated on DECEMBER 27, 2017

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.4 to 12.1.0.2 [Release 11.2 to 12.1]
Information in this document applies to any platform.

Symptoms

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.

 

Cause

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