Thanks, that was a good tip. Here's an oddity. I picked a job at random and did 
a ? next to it, which shows:
DDNAME   StepName
JESMSGLG JES2    
JESJCL   JES2    
JESYSMSG JES2    
SYSPRINT TSTDYNAL
SYSPRINT TSTDYHDS

But ISFDSNAME for the last two returns a ? for the last qualifier:
MJD2.MJDASTDS.JOB00645.D0000103.?

Why isn't that SYSPRINT at least? It's harmless, I'm just wondering!

Also, I see no ISFSTEPNAME. Is the StepName value not available

-----Original Message-----
From: IBM Mainframe Discussion List <[email protected]> On Behalf Of 
Farley, Peter
Sent: Friday, January 16, 2026 12:27 PM
To: [email protected]
Subject: Re: SDSF / ISFEXEC / ISFACT question

That is not hard to handle when there are any significant differences in LRECL 
of the SYSOUT and JCL spool files.

The SDSF Rexx interface returns the LRECL of all spool files in the job as one 
of the arrays returned from the action character “?” against a job.  One only 
needs to pre-scan the LRECL array for the largest value and allocate the single 
output file as RECFM=VB with that maximum LRECL + 4 and no issues should occur 
in writing output to that file from all spool files in the job.

Peter

From: IBM Mainframe Discussion List <[email protected]> On Behalf Of 
Paul Gilmartin
Sent: Friday, January 16, 2026 11:40 AM
To: [email protected]
Subject: Re: SDSF / ISFEXEC / ISFACT question

On Fri, 16 Jan 2026 09:36:29 -0500, Phil Smith III wrote:
>    ...
>This EXEC will let us save the job output before deleting it. FFDC, what a 
>concept!
> 
How do you deal with various attributes among the numerous spool data sets 
which constitute a job?

I could imagine writing each spool data set to a separate PS data set and 
building an index file to identify them..

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