Oppolzer - Informatik / Blog

I believe there is no simple yes/no answer to this question; it could depend a
lot if there are PL/1 modules built of several components calling each other
statically or dynamically, which are changed separately.

If you expect that you are able to call a PL/1 module compiled by a recent
Enterprise compiler from an "old" unchanged PL/1 module, compiled by the
unsupported PL/1 for MVS compiler, you may get into serious trouble.

On the other hand, if all programs are monilithic modules or main programs, that
don't call each other, such a step-by-step migration approach may work.

Other questions could be: what interfaces do exist to other products, such as
DB2, CICS, IMS, 3rd party? What changes need to be made to the sources to keep
those interfaces working?

HTH, kind regards

Bernd



Am 16.07.2014 17:13, schrieb P.B.:

> Sorry to return to this again, but our customer has asked for some
> clarification, especially now that z/OS 2.1 has now been out for some time.
>
> I've been asked to check the following...
>
> - Is anybody successfully running PL/1 for MVS 1.1.1 on z/OS 2.1?
>
> - They are under the impression that migrating to Enterprise PL/1 needs a mass
>   recompile, but my understanding is that it can be a gradual process, whereby if
>   a program needs changing it can be recompiled using the new compiler. It would
>   be nice if I could go back and convince them that is correct.
>
> They seem to accept that conversion to Enterprise PL/1 is inevitable, but want
> to be clear how big a task it would be for them and what the implications are of
> not doing it. I know what I would do but it's not my dog ... (well it is, at the
> end of the day...)
>
> Thanks for any advice
>
> Regards and thanks
> P.
>
>
>
> _____________________________________________
> From: P.B.
> Sent: Wednesday, October 23, 2013 2:06 PM
> To: 'IBM Mainframe Discussion List'
> Subject: PL/1 and z/OS 2.1
>
>
> Hi
>
> I am aware that PL/1 for MVS 1.1.1 is unsupported (and probably has been for
> some time) but is anybody using it on z/OS 2.1, or CICS 5.1 for that matter?
>
> We have a customer who is reluctant to upgrade to Enterprise PL/1 or whatever
> the most recent flavour is called.
>
> Regards and thanks
> P.
>
>
>
>
>
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