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Single COPY CICS TS datasets and when to make upgrade effect


IBM Mainframe Forums -> CICS
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Kyle Carroll

New User


Joined: 31 Aug 2016
Posts: 10
Location: USA

PostPosted: Tue Oct 11, 2016 9:47 pm
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Hi,

In a company I recently joined, I am finding some CICS TS libraries where they only have one version (used for both prod and dev) across multiple LPARs (except sandbox) with shared DASD.

They are the following:

SDFHCOB
SDFHEXCI
SDFHMAC
SDFHPARM
SDFHPL1

I am trying to determine the most appropriate time to upgrade these from CICS TS 4.1 to CICS TS 5.3 during my region upgrade phase that will be staggered.

I am assuming that since CICS TS 5.3 would be downward compatible to CICS TS 4.1 and therefore the best time would be to upgrade these libraries to CICS TS 5.3 before starting the region migrations.

Even though these are not directly used by CICS regions, they are for compiles and I want to make sure that any compiles/execution (COBOl, etc...) do not have issues regardless if a CICS region is CICS TS V4.1 or V5.3.

Does this sound like the correct approach?

Thanks,
Kyle.
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Garry Carroll

Senior Member


Joined: 08 May 2006
Posts: 1119
Location: Dublin, Ireland

PostPosted: Wed Oct 12, 2016 6:13 pm
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In my opinion, you should NOT upgrade the libraries used in the compile/link process until AFTER the production regions have been upgraded. A newer release of CICS may provide features which are not available on the earlier release and, if developers exploit these before production is ready, you will have issues.

Garry
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Kyle Carroll

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Joined: 31 Aug 2016
Posts: 10
Location: USA

PostPosted: Fri Oct 14, 2016 12:56 am
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Thanks Garry.
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