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OEM Agent Query Blocks START_PROPAGATION (Doc ID 455407.1)

Last updated on MARCH 04, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.1 to 10.2.0.4 [Release 10.2]
Information in this document applies to any platform.
This problem can occur on any platform.

Symptoms

NOTE: In the images and/or the document content below, the user information and data used represents fictitious data from the Oracle sample schema(s) or Public Documentation delivered with an Oracle database product.  Any similarity to actual persons, living or dead, is purely coincidental and not intended in any manner. 

The OEM Agent process is blocking DBMS_PROPAGATION_ADM.START_PROPAGATION.

The procedure DBMS_PROPAGATION_ADM.START_PROPAGATION requires momentary exclusive access to information in the library cache relating to a queue object and is being blocked by the agent process which is holding a shareable lock on that same queue object.

The OEM Agent query is of the form 

SELECT NVL(COUNT(MSG_STATE),0) FROM STRMADMIN.AQ$STREAMS_QUEUE_TABLE_T1 WHERE 
consumer_name is null AND MSG_STATE='WAITING' and queue = 'STREAMS_QUEUE_T1' 
and address IN (select '"'||destination_queue_owner ||'"' ||'.'||'"' 
||destination_queue_name||'"@'||destination_dblink from dba_propagation)

Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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