RE: CPU usage for QZDASOINIT

OK,

1) This _should_ be a parameterized query. What is issuing these requests?
If the query is coming up as a string each time then OS/400 will reevaluate
the query plan each time, a _big_ waste of time.

2) Buck has a valid point. Do you care that it's taking too much time?

3) Make sure you have an index (Logical file) that is by Policy0num. If
possible an index by Policy0num and symbol may even improve performance
more. Although I'm not sure OS/400 takes advantage of covering indexes.

4) 7700 done and 12K to go, you're talking about 20K lookups. Don't expect
it to be sub-second.

-Walden


------------
Walden H Leverich III
President
Tech Software
(516) 627-3800 x11
(208) 692-3308 eFax
WaldenL@TechSoftInc.com
http://www.TechSoftInc.com

Quiquid latine dictum sit altum viditur.
(Whatever is said in Latin seems profound.)



-----Original Message-----
From: Adam Lang [mailto:aalang@rutgersinsurance.com]
Sent: Thursday, August 29, 2002 12:47
To: midrange-l@midrange.com
Subject: Re: CPU usage for QZDASOINIT


How do I tell what fields are indexed?

The 3600 is how many times it has run that query, not the time it has been
running.

I am now up to 7700 requeries.  It has been runnign for 2 hours.  WRKACTJOB
says it is now up to 46.5% CPU usage.

I got about 12000 more requeries to go.

The select statement I am using is:

SELECT symbol FROM RUGR80DAT.PMSP0200 WHERE policy0num = '<this is the value
that changes on each query>';

There are 148,543 records in this file.

Adam Lang
Systems Engineer
Rutgers Casualty Insurance Company http://www.rutgersinsurance.com
----- Original Message -----
From: "Walden H. Leverich" <WaldenL@TechSoftInc.com>
To: <midrange-l@midrange.com>
Sent: Thursday, August 29, 2002 12:42 PM
Subject: RE: CPU usage for QZDASOINIT


> Depends on the select clause, the where clause, the number of rows in
> the
> table(s) and the available indexes. Also, is that 3600 3600ms? That's only
> 3.6 seconds, could be normal.
>
> -Walden
>
>
> ------------
> Walden H Leverich III
> President
> Tech Software
> (516) 627-3800 x11
> (208) 692-3308 eFax
> WaldenL@TechSoftInc.com
> http://www.TechSoftInc.com
>
> Quiquid latine dictum sit altum viditur.
> (Whatever is said in Latin seems profound.)
>
>
>
> -----Original Message-----
> From: Adam Lang [mailto:aalang@rutgersinsurance.com]
> Sent: Thursday, August 29, 2002 12:15
> To: midrange-l@midrange.com
> Subject: CPU usage for QZDASOINIT
>
>
> I am runnign that query now (it has currently requeried over 3600
> time).
>
> Should it be runnign this hard for a simple select/where statement?
>
>       QZDASOINIT   QUSER       PJ     30.9                   RUN
>
> Adam Lang
> Systems Engineer
> Rutgers Casualty Insurance Company http://www.rutgersinsurance.com
>
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