Thank you Peter.

Mike Shaw
MVS/QuickRef Support Group
Chicago-Soft, Ltd.

On Sat, Jul 2, 2016 at 9:01 AM, Peter Relson <rel...@us.ibm.com> wrote:

> >Then is there a reliable method for a non APF authorized program that
> does
> >not execute continuously to determine whether a capacity on demand
> upgrade
> >was performed since the last time that same program executed?
>
> Not that comes to mind. And, in fact, the operating system has no idea
> that that has happened either. It knows only that a configuration change
> event was identified by the machine (or for whatever other reason it
> chooses to refresh the data, and there are some) and the system reacts to
> changes that it finds within the data. The ENF signal that I presume you
> are alluding to (non-APF authorized programs cannot listen for an ENF
> signal) is about the (potential) configuration change event, not about a
> capacity on demand upgrade. It is up to the listener to determine if there
> is anything of interest that has changed.
>
> >Because some of the return codes indicate invalid data.
> I would say "no they do not; they indicate that the data are not
> available".  That does not relate to the value in a particular field.
>
> Peter Relson
> z/OS Core Technology Design
>

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