RE: tuning PL/SQL
- From: "Chris Stephens" <ChrisStephens@xxxxxxxxxx>
- To: <oracle-l@xxxxxxxxxxxxx>
- Date: Tue, 31 Aug 2004 09:02:30 -0500
Runstats is another tool to tell the resource consumption of a pl/sql
program. It's on asktom.
Lio is just the query column in a tkprof file and cr + cu in a 10046.
Hth
chris
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Michael Thomas
Sent: Monday, August 30, 2004 8:24 PM
To: oracle-l@xxxxxxxxxxxxx
Subject: Re: tuning PL/SQL
Hi,
--- David <thump@xxxxxxxxxxxxxxxx> wrote:
> I have been working on tracing session statements to
> derive the explain
> plan and LIO values.
> What does one do to accomplish the same when PL/SQL
> code is encountered.
> Extended SQL Tracing provides no explain plan or
> fetch(buffer gets) values
> Also, to confirm is it disk or query fetch divided
> by count to determine
> LIO figure?
> Thanks
> --=20
> ..
> David
>=20
1) One solution might be to identify how much time
each=20
line of PL/SQL consumes and how many times each
line executes. Have you tried DBMS_PROFILER?
The 9.2 Oracle docs on DBMS_PROFILER start here:
http://tinyurl.com/6pwmf
It would help identify specific portions of code
to for optimization work. For example, this might
give you prioritized information on which SQL
statements need tuning (based on response time).
2) I believe the Hotsos SQL test harness can now
profile PL/SQL, including statistics and timed events,
based on my review of the latest test harness version.
But, this is a relatively new feature, and I have
not tested it yet. Docs says it does not do plans=20
on SQL statements within PL/SQL.
3) There are other good methods to measure PL/SQL=20
performance. Examples include code in C McDonald's=20
new PL/SQL book, and using logoff session triggers=20
to gather OWI related details suggested in the new=20
OWI book.
HTH.
Good luck.
Regards,
Mike Thomas
=09
_______________________________
Do you Yahoo!?
Win 1 of 4,000 free domain names from Yahoo! Enter now.
http://promotions.yahoo.com/goldrush
----------------------------------------------------------------
Please see the official ORACLE-L FAQ: http://www.orafaq.com
----------------------------------------------------------------
To unsubscribe send email to: oracle-l-request@xxxxxxxxxxxxx
put 'unsubscribe' in the subject line.
--
Archives are at //www.freelists.org/archives/oracle-l/
FAQ is at //www.freelists.org/help/fom-serve/cache/1.html
-----------------------------------------------------------------
----------------------------------------------------------------
Please see the official ORACLE-L FAQ: http://www.orafaq.com
----------------------------------------------------------------
To unsubscribe send email to: oracle-l-request@xxxxxxxxxxxxx
put 'unsubscribe' in the subject line.
--
Archives are at //www.freelists.org/archives/oracle-l/
FAQ is at //www.freelists.org/help/fom-serve/cache/1.html
-----------------------------------------------------------------
Other related posts:
