• Subject: Re: MCH3402
  • From: John P Carr <jpcarr@xxxxxxxxxxxx>
  • Date: Fri, 8 Oct 1999 20:38:36 -0400


        Are ANY,  I mean ANY other programs being called within this job
stream ??
        Don't look at just these two and think you looked everywhere.

        For example,

        PGMA  calls PGMB
        PGMB  returns to PGMA

        sometime later 

        PGMA calls PGMC
        PGMC  returns to PGMA

        Sometime later

        PGMA calls PGMB
        PGMB returns to PGMA

        PGMA goes down for a MCH  error.

        Who's fault ??   PGMC stepped on the 
        PSSA or Working Variables area of 
        PGMA without PGMB knowing it,   It
        wasn't a problem till PGMA tried to 
        refer to those variables(or other things
        like program names, parms, etc)
        that it discovered someone TOASTED
        PGMA's area.

        It probably isn't PGMA,  nor PGMB
        but someother program in the stack
        that may or may not logically be called every time.

        What makes it worse is that you could 
        run it many times without PGMA happening
        to refer to the particular area that got stepped
        on, or the problem program being called.

        But. I'd be willing to bet that  It's a mismatched parm somewhere.

        You have to look at EVERY program that may logically
        be called.

        John Carr

        From:   Leland@dleland on 10/08/99 03:06 PM

        Subject:        MCH3402

        Okay, I'm stumped.  I know that Hans has said when these MCH errors
occur, it's usually not the operating system but a bug in a user program. 
Well, we have 2 programs that get these (only once and a while though) and
I've been on a hunt to find the culprit but have been unable.

        I've checked all the parameters of the calling and receiving
programs and they match.  I'm at a loss.  What other things should I be
looking for?


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