Re: Mat View - used by?

  • From: Anthony Ballo <anthony.ballo@xxxxxxxxxxx>
  • To: "'oracle-l@xxxxxxxxxxxxx'" <oracle-l@xxxxxxxxxxxxx>
  • Date: Mon, 12 Dec 2011 10:16:56 -0800

Thanks Tim!
WITH The column: MODULE, I was able to provide a lead to track this one down to 
one user:


        select SQL_ID from DBA_HIST_SQL_PLAN

        where OBJECT_NAME = 'XX_MY_MV')

From: Tim Gorman <tim@xxxxxxxxx<mailto:tim@xxxxxxxxx>>
Reply-To: "tim@xxxxxxxxx<mailto:tim@xxxxxxxxx>" 
Date: Mon, 12 Dec 2011 09:52:38 -0800
To: Anthony Ballo 
Subject: Re: Mat View - used by?

Look for the name of the MV in the OBJECT_NAME column of DBA_HIST_SQL_PLAN, 
which will give you a list of SQL_IDs, not people or users.  However, you can 
then query DBA_HIST_ACTIVE_SESS_HISTORY for session information (including 
USER_ID, MODULE, ACTION, etc) based on those SQL_IDs.

Just be aware that the AWR information is not an audit trail, but sampled data, 
so it is not perfect or definitive.

But it is way, WAY, *WAY* better than nothing... :-)

Happy hunting!

-----Original Message-----
From: Anthony Ballo [mailto:anthony.ballo@xxxxxxxxxxx]
Sent: Monday, December 12, 2011 10:47 AM
To: 'oracle-l@xxxxxxxxxxxxx<mailto:'oracle-l@xxxxxxxxxxxxx>'
Subject: Mat View - used by?

Hello, I'm trying to determine if we can lengthen the time to refresh on a 
particular Mat View in Is there a way to see (via SQL?) what other 
code utilizes this Materialized View (like a "used by")? It is currently on a 
1/48 (every half hour) refresh which seems excessive to me. The naming of the 
view would suggest that it is used in Discoverer reporting. Thanks, Anthony --


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