RE: how to find the most resource intensive sql?
- From: "Niall Litchfield" <n-litchfield@xxxxxxxxxxxxxxxxxxxxxxx>
- To: <oracle-l@xxxxxxxxxxxxx>
- Date: Fri, 12 Mar 2004 11:13:55 +0000
I do the following
> > 'A user comes to you and says they get to a point in the
> application and
> hit
> > a button. It's slow. You do not have any access to the
> application. How do
> > you find the problem query in the database'
>
> In a (preferably) test system, ask the user to get to the
> point just before
> the "button".
So far so good
> Flush the shared_pool, then push the button.
Then I don't flush the shared_pool but press the button on my monitoring app
that issues
DBMS_SYSTEM.SET_TRACE_IN_SESSION(:SID,:SERIAL,TRUE,FALSE);
Other than this one button it's a really bad monitoring app. I use it for the
above and answering 'how many people are logged onto server X' only.
Niall Litchfield
Oracle DBA
Audit Commission
+44 117 975 7805
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