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Scheduler Job For Removing AQ Subscriber Fails With ORA-04021 (Doc ID 2979780.1)

Last updated on JULY 20, 2024

Applies to:

Oracle Database - Enterprise Edition - Version 19.12.2.0.0 and later
Information in this document applies to any platform.

Symptoms

ORA-04021: timeout occurred while waiting to lock object <QUEUE_TABLE>
2023-09-12T15:12:45.067869+10:00
Errors in file /u01/oracle/diag/rdbms/*/*/*.trc:
ORA-12012: error on auto execute of job "SYS"."AQ_JOB$_319890"
ORA-06512: at "SYS.DBMS_AQADM_SYS", line 13572
2023-09-12T15:13:11.108818+10:00

Changes

 The queue table receives heavy load every second

Cause

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In this Document
Symptoms
Changes
Cause
Solution


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