ca.portal.admin

QSAM or PREFETCH - pros and cons

Discussion created by ca.portal.admin on Feb 7, 2008
Latest reply on Feb 7, 2008 by ca.portal.admin
Hi gang,

Your posts on the topic ""Local mode update and fastaccess"" leads me to
another question:

When to use IDMSQSAM vs. when to use PREFETCH.

I've used both in a limited way, and years ago, at another company,
switched to PREFETCH because QSAM didn't seem to do much for me while
PREFETCH did (after it came out.)

Lutz's comment that QSAM only works on one file (the first file in a
multi-file area?) kind of strikes me as why I wasn't overly impressed
like most of you are with QSAM.

In this shop, we have numerous huge areas (95% of all areas are 1
rec/area) and a home-grown program that unloads records via full track
reads. As a result, the only place QSAM is used is in UNLOAD/RELOAD
jobs.

Dick

Richard Pierce
(617) 973-8911
richard.pierce@state.ma.us

Remember, the answer to all questions is a reply, but a reply is not
necessarily an answer.
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Z/OS upgrade
"We are planning to upgrade Z/OS from 1.7 to 1.9. Are there any known
IDMS issues with Z/OS 1.9?

Kay Rozeboom
State of Iowa
Information Technology Enterprise
Department of Administrative Services
Telephone: 515.281.6139 Fax: 515.281.6137
Email: Kay.Rozeboom@Iowa.Gov
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Re: Z/OS upgrade
"Kay,

I ran into a T03C ABEND in DC COBOL programs after our systems group
added IBM fix RSU0710 to the z/OS 1.8 system.

CA gave me QO88748 for R15 and QO88752 for R16 to fix the ABEND.


The description is:

""Clients who have upgraded their operating systems or
have applied IBM apar PK28112 or its equivalent
to IBM module CEEBHINE on applicable releases of
z/OS will receive T03C abends for LE/370 programs
which are in ESTAE processing.""

Good Luck,

Jim

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