Re: ILE, Activation groups, and files staying open.

[Gerald Magnuson <gmagqcy.midrange@xxxxxxxxx>]

well,  I have that very case here.   a trigger on the most used master
file.
the trigger program just pushes a data queue entry to a NEP that listens
and does the needful.

looking at that trigger program:   it's a C program, and *CALLER.



On Fri, Jun 4, 2021 at 2:35 PM Alan Cassidy <cfuture@xxxxxxxxxxx> wrote:

> At my shop, somebody wrote a trigger program and then attached it to the
> most-used file in the system.
>
> That file is also used by the most-used program. It runs standalone and
> also is called by maybe up to hundreds of other programs. Quite a "legacy".
>
> I don't know what activation group attribute he used but it created
> havoc for a few minutes. (I suspect *CALLER). Till somebody hit an
> emergency virtual) STOP button.
>
> I did a trigger program shortly afterward and they teamed me up with two
> guys to look over my code and monitor the action.
>
> I did the trigger-pair thing from a recent article. One "driver" that
> does nothing but pass the parms through to the "workhorse" program. That
> way you can replace the "workhorse" without disturbing the file or its
> attached trigger file directly.
>
> BUT before I did the trigger program, I ran X-Analysis to get ALL the
> programs that did ANY updates/deletes/inserts to the file, and
> considered their own activation groups. In this case (and most) you have
> to compile the trigger program with *CALLER, or get your performance
> killed and mutilated.
>
> I also "walked the upstack" from those programs to check the activation
> group. It looked like the programs had been called without regard for
> consideration for the ACTGRP issues. After that havoc, though, they're
> paying more attention. Some of those "upstack" programs I had to convert
> from OPM RPG3 code. Glad to do it!
>
> --Alan Cassidy
>
>
>
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