No apology needed, One of the reasons for this forum is to learn. Analyzing standalone dumps is similar to console dumps. Standalone dumps are very rare and are only used in extreme situations (e.g. console dump command does not work or system in spin loop). In my past life as a sysprog, the only time I took standalone dumps was to verify it was working. In product support and product development, we only request this as a last resort because it's disruptive. I've never looked at one because console dumps and slip dumps were available and sufficient.
Standalone dumps and console dumps are not caused by an event (e.g. abends or slip traps). In this case, the problem task might not be active on a CPU. In this case, you don't have module names unless you look them up directly. You only know the symptoms that caused you to take the dump. For vendor software problems, it's unlikely sysprogs will be able to analyze the dump because it usually requires internal control block knowledge that a sysprog won't have access. For inhouse program problems, then a sysprog would analyze the dump according to the symptoms and control block information. . Some of the common things sysprogs could analyze in console dumps: 1. IP VERBX LOGDATA formats the logrec data. Software and hardware errors are logged here. 2. IP VERBX MTRACE formats the console log messages. Maybe there is an error message. 3. If there is a program looping, then displaying TCBTTIME might show the TCB that is using a lot of CPU time. 4. If you know the looping TCB, then you can look at the RB's for that TCB to see the PSW's. IP WHERE xxx. will show you the load module name and offset for the PSW address. If you are real lucky, then SYSTRACE might show some of the instructions which are looping. There is probably more that could be easily reviewed by sysprogs but it really depends upon the problem symptoms.. Jon Perryman. >________________________________ > From: Jake anderson <[email protected]> > >Apology for my ignorance. Does it apply same for analysing Z/OS Standalone >Dump ? >
