Re: Why no row source plans in tkprof output? -- More info please read...
- From: "Stefan Knecht" <knecht.stefan@xxxxxxxxx>
- To: "Binh Pham" <binhpham15@xxxxxxxxxxx>
- Date: Tue, 24 Apr 2007 22:35:22 +0200
From the sound of it, you're tracing a user's session from another session.
As long as that session is still running, the cursors do not necessarily
have to be closed just because the transaction is completed (either by
rollback or commit, doesn't matter). The only way to be really sure that all
the stat lines (row source operations) get dumped in the tracefile is to end
the session before disabling the trace.
Also, tkprof isn't perfect. That's why some people write their own
profilers, or look at raw trace files when in doubt.
If the STAT lines aren't there for the SQL you're interested in, the cursor
just hasn't been closed yet (and in fact, in a well designed application, it
may never be closed until the application shuts down.)
Stefan
On 4/24/07, Binh Pham <binhpham15@xxxxxxxxxxx> wrote:
I do see stats written for some of the SQL's in the raw trace file,
however, there is no row source plans for any of the SQL's in the tkprof
output file. There are many SQL's in this trace file and most of them if
not all were completed. The trace was turned off when the user transaction
completed.
Can you explain that?
Also, the dump file size is unlimited.
Thanks for any additional input.
------------------------------
From: *"Stefan Knecht" <knecht.stefan@xxxxxxxxx>*
Reply-To: *knecht.stefan@xxxxxxxxx*
To: *binhpham15@xxxxxxxxxxx*
CC: *oracle-l <oracle-l@xxxxxxxxxxxxx>*
Subject: *Re: Why no row source plans in tkprof output?*
Date: *Tue, 24 Apr 2007 08:19:00 +0200*
The STAT lines (row source operations) only get dumped in the tracefile
when the cursor gets closed. If, for example, you're tracing a running
session for a short period of time, you may not get any plans in the
tracefile (and hence in tkprof).
If you're tracing your own session, as alexander suggested, quitting your
session cleanly will help.
Stefan
On 4/24/07, Binh Pham <
binhpham15@xxxxxxxxxxx> wrote:
>
> Sometimes I have these "row source" plans (not the regular explain
> plans created by the explain=user/password parm) in my tkprof output,
> sometimes I do not see them. I'm on
> 9.2.0.6 (HPUX).
>
> Thanks for any explanation.
>
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--
=========================
Stefan P Knecht
Consultant
Infrastructure Managed Services
Trivadis AG
Europa-Strasse 5
CH-8152 Glattbrugg
Phone +41-44-808 70 20
Fax +41-808 70 12
Mobile +41-79-571 36 27
stefan.knecht@xxxxxxxxxxxx
http://www.trivadis.com
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--
=========================
Stefan P Knecht
Consultant
Infrastructure Managed Services
Trivadis AG
Europa-Strasse 5
CH-8152 Glattbrugg
Phone +41-44-808 70 20
Fax +41-808 70 12
Mobile +41-79-571 36 27
stefan.knecht@xxxxxxxxxxxx
http://www.trivadis.com
=========================
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