There is a GDGBIAS=JOB | STEP parm on the JOB statement in z/OS
2.3.
Jim Mulder z/OS Diagnosis, Design, Development, Test IBM Corp.
Poughkeepsie NY
"IBM Mainframe Discussion List" <IBM-MAIN@LISTSERV.UA.EDU> wrote on
07/11/2018 03:35:00 PM:
> From: "Tony Thigpen" <t...@vse2pdf.com>
> To: IBM-MAIN@LISTSERV.UA.EDU
> Date: 07/11/2018 04:39 PM
> Subject: Re: REXX as JCL replacement
> Sent by: "IBM Mainframe Discussion List" <IBM-MAIN@LISTSERV.UA.EDU>
>
> Restarts with GDGs is one thing z/VSE is much better at. Once a GDG is
> created in a step, it becomes the current GDG for all following steps.
> So, following steps don't need to reference +1, then require a change
> during a restart.
>
> It part of the difference that z/OS reads the whole job in then
> allocates everything where as z/VSE only reads the following JCL after
> the previous step has completed.
>
> Tony Thigpen
>
> John McKown wrote on 07/11/2018 01:30 PM:
> > On Wed, Jul 11, 2018 at 12:01 PM Jesse 1 Robinson
<jesse1.robin...@sce.com>
> > wrote:
> >
> > I, like many here, am old enough to remember how much of a PITA
> > it was to restart a job when a step failed for some reason. Mainly
deleting
> > datasets, but also changing GDG relative generation numbers if the
restart
> > is after the step which created the new GDG which is used in
subsequent
> > steps. {shudder}
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