Hi Mark,
Thanks. Been down that path. The APAR states that the release doc is
"explicit" in the need for z22 mode, but in fact it is silent.
Now I look in the 2.5 JES2 Tuning and Initialization Reference, and find the
answer:
COLD_START_MODE = z11 | z22 | DEFAULT
So, it seems they IBM was thinking of changing z22 mode to a requirement, but
backed off.
IBM User
----- Original message -----
From: Mark Jacobs <[email protected]>
To: [email protected]
Subject: Re: Is JES2 z22 mode required on z/OS 2.5?
Date: Thursday, August 18, 2022 10:12 AM
Look at this APAR, it should answer your question. Yes, it is.
https://www.ibm.com/support/pages/apar/OA62594
Mark Jacobs
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------- Original Message -------
On Thursday, August 18th, 2022 at 9:45 AM, IBM user <[email protected]> wrote:
> Is JES2 z22 checkpoint mode required as pre-req for z/OS 2.5?
>
> I see mention of this in Marna Walle's presentations,
>
> -- Activate z22 mode -(REQUIRED-IF, as of V2.5)
>
> and perhaps it was being considered at one time, but I am unable to locate
> any record of this requirement in the z/OS 2.5 release manuals.
>
> Any ideas?
>
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