RE: MCH3402

[John P Carr <jpcarr@xxxxxxxxxxxx>]

        Look for the ones that have been created/changed lately.

        John Carr


        From:   Leland@dleland on 10/11/99 10:19 AM
        To:     MIDRANGE-L@MIDRANGE-L@midrange.com@SMTP@EXCHCONNECT
        cc:      

        Subject:        RE: MCH3402

        Unfortunately, there are many other programs being called in the
job.  It's an "async" job which waits for an entry to hit a data queue and
then calls other programs with the data received.  Looks like I could be in
for a long hunt here.

        Thanks for the reply, 
        Dave 

        -----Original Message----- 
        From: John P Carr [ mailto:jpcarr@tredegar.com] 
        Sent: Friday, October 08, 1999 7:39 PM 
        To: MIDRANGE-L 
        Subject: Re: MCH3402 



                Dave 

                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 
                To:   MIDRANGE-L@MIDRANGE-L@midrange.com@SMTP@EXCHCONNECT 
                cc:    

                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? 

                Dave 




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