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Cannot Drop Custom Queue Due To Error ORA-04020 (Doc ID 2410802.1)

Last updated on MARCH 08, 2019

Applies to:

Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Oracle Database Backup Service - Version N/A and later
Information in this document applies to any platform.

Symptoms

The following error is reported

SQL> exec DBMS_AQADM.DROP_QUEUE_TABLE (QUEUE_TABLE => '<SCHEMA>.<TABLE NAME>
',force => true);
BEGIN DBMS_AQADM.DROP_QUEUE_TABLE (QUEUE_TABLE => '<SCHEMA>.<TABLE NAME>',fo
rce => true); END;

*
ERROR at line 1:
ORA-04020: deadlock detected while trying to lock object
<SCHEMA>.AQ$<TABLE NAME>
ORA-06512: at "SYS.DBMS_AQADM", line 240
ORA-06512: at line 1

when dropping existing queue tables in editioned schemas

Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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