..thankyou all so very much...we are set now...
-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of
Chase, John
Sent: Tuesday, June 10, 2008 10:31 AM
To: [email protected]
Subject: Re: REGION Size Specification for CICS
> -----Original Message-----
> From: IBM Mainframe Discussion List On Behalf Of Donnelly, John P
>
> ..best practices suggestions if you would:
>
> ...we had a CICS region go south today with many many hits as:
>
> IGZ0096C A load of module IGZEOUT was unsuccessful.
> From compile unit P820CCC6 at entry point P820CCC6
> 11EE3CF4.
>
> ...we considered a limitation within the CICS REGION as the
> problem and are pondering changing the region size from 100M
> to 0M but some folk are suggesting that 32M is better, or 64M...
I suspect that your EDSALIM within the CICS region, rather than / in
addition to the REGION= size, is causing your grief. You didn't mention
what release of CICS you're running, but if it's 3.x you are probably
just plain lucky to get any throughput at all if your EDSALIM is less
than about 60M. Add at least 10M to that, plus whatever you require for
LSR buffers, to get an "absolute minimum" REGION= size.
> ...0M gives the task all the storage available above and
> below the line but we are concerned about JAVA and USS
> activity which might do GETMAINs or require memory that 0M
> might not allow...
You lost me on that one.... Is this JAVA and/or UNIX activity occurring
within the CICS address space? If so, then REGION=0M likely would help,
not hinder. But if you're seeing the problem with REGION=100M, you
might try increasing it by 100M increments until the problem goes away.
It's doubtful you'll end up anywhere near your maximum available private
region size.
> ...we also had the LE libraries concatenated to the CICS
> STEPLIB which we will eliminate...
What will that do? Note that if you remove them from STEPLIB and don't
have them link-listed (in the order specified by CICS Installation
Guide), CICS won't even start.
-jc-
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