ca.portal.admin

Re:Multitasking - is it worth it?

Discussion created by ca.portal.admin on Oct 2, 2008
I have a system which is purely Batch and CICS. There is no IDMS DC or ADS.

Would multitasking bring me any advantage or would it just be an overhead?

R16 SP6 . Z/OS 1.9. 4 processor large IBM thing - I lose track of the model numbers.

My system is well buffered and uses dataspaces extensively CPU availability is my issue. There is no paging and I/O is not a problem.

Thanks for any tips.

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Chris Trayler, IXD
Bank Julius Baer & Co. Ltd.
P. O. Box, CH-8010 Zürich, Switzerland
Telephone +41 (0)58 887 4332, Fax +41 (0)58 887 4969 www.juliusbaer.com <http://www.juliusbaer.com/>

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Re: Multitasking - is it worth it?
"Ed, I can see why your environment would benefit from MT=2E You are=0D=0Ar=
unning the UCF line driver and the ADSO apps under their own TCB's=0D=0Aapa=
rt from IDMS DB=2E However, in environments where CICS communicates=0D=0Aw=
ith IDMS through an svc posting ecb's (ereecb and eseecb) MT is no=0D=0Ab=
enefit at all, and in fact the eternal MPMODE checking adds useless=0D=0Aov=
erhead=2E Maybe now that IDMS does two-phase committs, the IDMS DB TCB=0D=
=0Acan be multi-TCB'd=2E Then, every IDMS shop would benefit=2E=0D=0A=0D=
=0ALutz Petzold=0D=0ATDM UDB/IDMS Support=0D=0A401-782-2265=0D=0APage 860 3=
66 0865 or Telalert=0D=0A =0D=0A =0D=0A=0D=0AThis e-mail may contain confid=
ential or privileged information=2E If=0Ayou think you have received this e=
-mail in error, please advise the=0Asender by reply e-mail and then delete =
this e-mail immediately=2E=0AThank you=2E Aetna
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Re: Multitasking - is it worth it?
"Ed, I can see why your environment would benefit from MT. You are
running the UCF line driver and the ADSO apps under their own TCB's
apart from IDMS DB. However, in environments where CICS communicates
with IDMS through an svc posting ecb's (ereecb and eseecb) MT is no
benefit at all, and in fact the eternal MPMODE checking adds useless
overhead. Maybe now that IDMS does two-phase committs, the IDMS DB TCB
can be multi-TCB'd. Then, every IDMS shop would benefit.

Lutz Petzold
TDM UDB/IDMS Support
401-782-2265
Page 860 366 0865 or Telalert



This e-mail may contain confidential or privileged information. If
you think you have received this e-mail in error, please advise the
sender by reply e-mail and then delete this e-mail immediately.
Thank you. Aetna
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Re: Multitasking - is it worth it?
"Would multitasking provide much benefit for the following types of web access to IDMS data?

- IDMS Server using SQL alone
- IDMS Server using procedures and table procedures
- Web services via IDMS TCP/IP sockets programs
- Web services via CICS
- MQSeries via CICS

(Yes, we do all of these. Our motto seems to be ""one of everything"". It makes providing support interesting.)

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