RE: problem consistently getting explain plan with 10046 trace
- From: "Cary Millsap" <cary.millsap@xxxxxxxxxx>
- To: <ryan_gaffuri@xxxxxxxxxxx>, <oracle-l@xxxxxxxxxxxxx>
- Date: Fri, 4 Aug 2006 10:30:55 -0500
Ryan,
The Oracle kernel emits the STAT lines to the trace only when the
application closes a cursor. Exiting before disabling the trace is
usually the surest way to make the close event occur. So do this
instead:
alter session set time_statistics=true;
alter session set events '10046 trace name context forever, level 12';
<run stuff>
disconnect;
Cary Millsap
Hotsos Enterprises, Ltd.
http://www.hotsos.com
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________________________________
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of
ryan_gaffuri@xxxxxxxxxxx
Sent: Friday, August 04, 2006 10:20 AM
To: oracle-l@xxxxxxxxxxxxx
Subject: problem consistently getting explain plan with 10046 trace
We have found that we do not always get the 10046 explain plan that
gives us the LIO and PIO for each row source with a level 12 report.
This is what we are doing.
alter session set time_statistics=true
alter session set events '10046 trace name context forever, level 12';
<run stuff>
alter session set events '10046 trace name context off';
We find that we get the plan more often if we do a level 8 and if we
exit the session the session before running tkprof.
tkprof *.trc *.rep sys=no explain=<username/password>
I don't really want the 'explain plan' you get in sqlplus. I need the
one specific to the trace file that gives LIOs and PIOs by row source.
anyone else having this problem?
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