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DBMS Jobs hangs with Library cache locks in 11gR1 (Doc ID 1604347.1)

Last updated on NOVEMBER 13, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 11.1.0.6 to 11.1.0.7 [Release 11.1]
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Information in this document applies to any platform.

Symptoms

After upgrading to 11.1.0.6 or 11.1.0.7 from earlier releases, you observe that the job processes hang with library cache locks.

In v$session_wait you observe that the sessions waiting for library cache lock are job slave processes.

This is specific to dbms job but can be observed even for dbms_scheduler when job_queue_processes > 0.

Changes

Recently upgraded to 11.1.0.6 or 11.1.0.7 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References

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