Well, is it a hang or a loop? Do a few D J,jobname
to see if the CPU is going up. Then issue the DUMP command to trap it. If a loop, look at the system trace table. It may be constantly reissuing an SVC, such as not clearing an ECB and reissuing the WAIT (yes, I have done that). Or you will see a lot of clock interrupts indicating a harder loop but you will see the PSW location. If a WAIT, you will need to examine the various tasks to see why. Will be more complex. On Sun, 19 May 2024 20:41:51 -0500 Steve Estle <000005dcac13570d-dmarc-requ...@listserv.ua.edu> wrote: :>Hello All, :> :>Way back in the day I used to read dumps fairly handily in the MVS/XA era. But have been away for so long I know things have evolved but appears everything is basically still intact relative to ASCB to PRB relationships. I'm working on a hang/loop condition that prevents started task from being stopped normally (P STC) and have taken SVC dump and want to interpret it. I'm somewhat fluent with IPCS and can bring up via panels, but from there am struggling with where to go to identify where the hang/loop condition is happening. :> :>Any shares of doc, presentations, tips, etc. are much appreciated as I still think this is one of the lost arts that in the end to be a top notch systems programmer you need to be able to interpret. I know IBM used to teach whole classes on this but believe much of that has gone way of dodo bird... :> :>Thanks in advance. :> :>Steve Estle :> :>---------------------------------------------------------------------- :>For IBM-MAIN subscribe / signoff / archive access instructions, :>send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN -- Binyamin Dissen <bdis...@dissensoftware.com> http://www.dissensoftware.com Director, Dissen Software, Bar & Grill - Israel ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN