Re: (oracle q000) Streams AQ: waiting for time management or cleanup tasks fall out.

From: David Fitzjarrell <oratune_at_yahoo.com>
Date: Thu, 21 Jun 2012 07:13:46 -0700 (PDT)
Message-ID: <1340288026.43995.YahooMailNeo_at_web160901.mail.bf1.yahoo.com>

If you have Data Pump configured then you're using AQ.  Remember that AQ is reading from and possibly writing to a queue table and if you also have Streams configured and running the I/O could get heavy.

David Fitzjarrell

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From: "Joel.Patterson_at_crowley.com" <Joel.Patterson_at_crowley.com> To: oracle-l_at_freelists.org
Sent: Thursday, June 21, 2012 6:54 AM
Subject: (oracle q000) Streams AQ: waiting for time management or cleanup tasks fall out.

When first starting a database I get very high USER IO:  I used db optimizer to see what stands out.  user 'Unknown', is shown to be consuming IO - it is connected to Non-SQL Activity with an SQL_ID of 0, and a SQL_ID which is connected to the Advanced queuing wait event in the subject line. I am unsure how this wait event or session is connected to the IO.  Has anyone come across this before?  Don't use AQ purposely in this DB or others.

Joel Patterson
Database Administrator
904 727-2546

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http://www.freelists.org/webpage/oracle-l Received on Thu Jun 21 2012 - 09:13:46 CDT