Re: How to best identify if applications are running in OPM mode?

[Mark S Waterbury <mark.s.waterbury@xxxxxxxxxxxxx>]

Hi, Gerald:

When you create an RPG IV program using CRTBNDRPG, you have an option 
(parameter) DFTACTGRP that defaults to *YES.  If you compile such a 
program with DFTACTGRP(*YES), it will show "Type of program" as "ILE" 
but the "Activation group attribute" will show *DFTACTGRP.

This means it will run in the "default activation group" for the job, 
which is primarily there for OPM programs.  This is what I like to call 
"OPM compatibility mode."   Note that IBM does not officially call it 
that, but that's what it is.

So, in addition to checking the results of DSPPGM, you also need to look 
at the activation group of any ILE programs.

Also, bear in mind that if you specify *CALLER for the ACTGRP, and 
somehow, you happen to call an ILE *PGM from a program that is running 
in the DAG, it will end up running in the default activation group.  
However, if it was not created with DFTACTGRP(*YES), it will not truly 
behave as an OPM program.  So, for example, RCLRSC will not be able to 
"clean up" any resources associated with that program.

That is why IBM advises caution about "mixing" of ILE and OPM programs 
... for more information, see:

    http://www.scottklement.com/presentations/

and look for the "ILE Concepts (for the Impatient RPG Programmer" link 
on that page.

All the best,

Mark S. Waterbury

> On 2/5/2013 8:19 AM, Gerald Kern wrote:
> Thanks Vern - DSPPGM is what I was looking for.
>
> The first attribute shown is Type of Program and it's either OPM or ILE.
>
> That's exactly what I was looking for.
>
> Thanks, Jerry
>
> Gerald Kern - Information Technology
> Programming Supervisor
> IBM Certified RPG IV Developer
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