Messages remain in Queue Table

Question

Hello,
I work as a dba in a company where my colleagues are developing an application that uses AQ.
The application is installed on multiple databases but we have a problem in a particular one:
the processed messages are not deleted from table by Oracle.
DBMS_AQADM.CREATE_QUEUE( Queue_name => 'my_AQ', Queue_table => 'AQT', Queue_type => 0, Max_retries => 65535, Retry_delay => 0, Retention_time => 2592000, dependency_tracking => FALSE);
SELECT msg_state, count(*) FROM AQT GROUP BY msg_state;
PROCESSED     830548
SELECT min(enq_time),max(enq_time) FROM AQT
07-OCT-10      01-AUG-12
SELECT value FROM v$parameter WHERE name='aq_tm_processes'
10
thanks,

Answer 1

Hi,
I didn't notice this in your first post:
DBMS_AQADM.CREATE_QUEUE(
    Queue_name => 'my_AQ',
    Queue_table => 'AQT',
    Queue_type => 0,
    Max_retries => 65535,
    Retry_delay => 0,
    Retention_time => 2592000,      <<<<<<<<<< why are you specifying such a high value for this?
    dependency_tracking => FALSE
);Retention_time: See doc for this value: http://docs.oracle.com/cd/E11882_01/server.112/e11013/aq_admin.htm#i1006091
This parameter specifies the number of seconds a message is retained in the queue table after being dequeued from the queue. When retention_time expires, messages are removed by the time manager process. INFINITE means the message is retained forever. The default is 0, no retention.
You are asking for messages to be retained for 30 days, now looking at the min/max enq_time you have messages which are much older than this, but did you check when they were actually DQ'd (DEQ_TIME)?
Also, from my previous post, did you check out that MOS note ? Did you check what the Q00 processes are doing in the database?
Thanks
Paul