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  3. July 2008

RE: SQL Performance Question

Debbie

To find out what is different, you have to use a monitor - it's pretty easy in the SQL statement processor of OpsNav. It is also called running with Visual Explain or some such. Without that, no one here has much of a chance to answer your very valid questions.

Also see Elvis' post a couple days ago on a different topic maybe - about different environments and pool sizes and all that having an affect on the performance.

HTH
Vern

-------------- Original message --------------
From: "DebbieKelemen" <DebbieKelemen@xxxxxxxxxxx>

Charles,

I ran the SP from iNav and it took a LOT longer. Just about as long as it
takes from the website. So now, what is different in the SP & just the SQL
running?

Debbie


-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of DebbieKelemen
Sent: Wednesday, July 30, 2008 12:57 PM
To: 'Midrange Systems Technical Discussion'
Subject: RE: SQL Performance Question

We are running the SQL statements. I will try it the other way and see what
happens.

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Wilt, Charles
Sent: Wednesday, July 30, 2008 10:28 AM
To: Midrange Systems Technical Discussion
Subject: RE: SQL Performance Question

Debbie,

When you say, "Yet, if we take the SQL and run it in Navigator", what do you
mean?

Are you running the SQL statements from the SP in iNav or are you actually
calling the SP from iNav?

If you're not actually calling the SP, then do so. If the performance of
the SP from iNav is good,
then the problem is outside the System i.

How is the web team calling the SP?

Charles Wilt
--
Software Engineer
CINTAS Corporation - IT 92B
513.701.1307

wiltc@xxxxxxxxxx


-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-
bounces@xxxxxxxxxxxx] On Behalf Of DebbieKelemen
Sent: Wednesday, July 30, 2008 11:54 AM
To: 'Midrange Systems Technical Discussion'
Subject: SQL Performance Question

We have some "SQL" processes that were written by our web development
team.
They were made into stored procedures on the iSeries. When they run for
our
website, they take 15 or 20 seconds, some times more to run. Yet, if we
take the SQL and run it in Navigator, it takes about 450 ms to run.

Any ideas on how to improve the performance of these stored procedures?

I have created the "suggested" indexes and still no improvement.

Debbie Kelemen
Sr. Programmer / Analyst
CHEFS
719-272-2617
dkelemen@xxxxxxxxxxxxxxxx
www.chefscatalog.com

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