WebSphere MQ for z/OS provides a set of panels to help you process dumps. The following section describes how to use these panels:
The IPCS MVS(TM) ANALYSIS OF DUMP CONTENTS panel appears.
The IPCS MVS DUMP COMPONENT DATA ANALYSIS panel appears. The appearance of the panel depends on the products installed at your installation, but will be similar to the panel shown below:
---------------- IPCS MVS DUMP COMPONENT DATA ANALYSIS ------------- OPTION ===> SCROLL === To display information, specify "S option name" or enter S to the left of the option desired. Enter ? to the left of an option to display help regarding the component support. Name Abstract ALCWAIT Allocation wait summary AOMDATA AOM analysis ASMCHECK Auxiliary storage paging activity ASMDATA ASM control block analysis AVMDATA AVM control block analysis COMCHECK Operator communications data CSQMAIN WebSphere MQ dump formatter panel interface CSQWDMP WebSphere MQ dump formatter CTRACE Component trace summary DAEDATA DAE header data DIVDATA Data-in-virtual storage
If this option is not available, it is because the member CSQ7IPCS is not present; you should see the WebSphere MQ for z/OS System Setup Guide for information about installing the WebSphere MQ for z/OS dump formatting member.
---------------IBM WebSphere MQ for z/OS - DUMP ANALYSIS---------------- COMMAND ===> 1 Display all dump titles 00 through 99 2 Manage the dump inventory 3 Select a dump 4 Display address spaces active at time of dump 5 Display the symptom string 6 Display the symptom string and other related data 7 Display LOGREC data from the buffer in the dump 8 Format and display the dump 9 Issue IPCS command or CLIST (c) Copyright IBM Corporation 1993, 2005. All rights reserved. F1=Help F3=Exit F12=Cancel
This displays the dump titles of all the dumps contained in the SYS1.DUMP data sets (where xx is a number in the range 00 through 99). You can limit the selection of data sets for display by using the xx fields to specify a range of data set numbers.
If you want to see details of all available dump data sets, set these values to 00 and 99.
Use the information displayed to identify the dump you want to analyze.
The dump inventory contains the dump data sets that you have used. Because the SYS1.DUMP data sets are reused, the name of the dump that you identified in step 5a might appear in the list displayed. However, this entry refers to the previous dump that was stored in this data set, so delete it by typing DD next to it and pressing Enter. Then press F3 to return to the DUMP ANALYSIS MENU.
It could be that the abend that caused the dump was not the original cause of the error, but was caused by an earlier problem. To determine which LOGREC record relates to the cause of the problem, go to the bottom of the data set, type FIND ERRORID: PREV, and press Enter. The header of the latest LOGREC record is displayed, for example:
JOBNAME: NONE-FRR ERRORID: SEQ=00081 CPU=0040 ASID=0033 TIME=14:42:47.1 SEARCH ARGUMENT ABSTRACT PIDS/5655L8200 RIDS/CSQRLLM1#L RIDS/CSQRRHSL AB/S05C6 PRCS/00D10231 REGS/0C1F0 RIDS/CSQVEUS2#R SYMPTOM DESCRIPTION ------- ----------- PIDS/5655L8200 PROGRAM ID: 5655L8200 . . .
Note the program identifier (if it is not 5655L8200, the problem was not caused by WebSphere MQ for z/OS and you could be looking at the wrong dump). Also note the value of the TIME field. Repeat the command to find the previous LOGREC record, and note the value of the TIME field again. If the two values are close to each other (say, within about one or two tenths of a second), they could both relate to the same problem.
You can use the symptom string from the LOGREC record related to the error to search the RETAIN database for solutions to similar problems (refer to Searching the IBM database).
---------IBM WebSphere MQ for z/OS - FORMAT AND DISPLAY DUMP-------- COMMAND ===> 1 Display the control blocks and trace 2 Display just the control blocks 3 Display just the trace Options: Use the summary dump? . . . . . . . . . . . . . . __ 1 Yes 2 No Subsystem name (required if summary dump not used) ____ Address space identifier or ALL. . . . . . . . . . ALL_ F1=Help F3=Exit F12=Cancel
You can also use the following options:
Use this field to specify whether you want WebSphere MQ to use the information contained in the summary portion when formatting the selected dump. The default setting is YES.
Use this field to identify the subsystem whose dump data you want to display. This is only required if there is no summary data (for example, if the operator requested the dump), or if you have specified NO in the Use the summary dump? field.
If you do not know the subsystem name, type IPCS SELECT ALL at the command prompt, and press Enter to display a list of all the jobs running at the time of the error. If one of the jobs has the word ERROR against it in the SELECTION CRITERIA column, make a note of the name of that job. The job name is of the form xxxxMSTR, where xxxx is the subsystem name.
IPCS OUTPUT STREAM ------------------------- COMMAND ===> ASID JOBNAME ASCBADDR SELECTION CRITERIA ---- -------- -------- ------------------ 0001 *MASTER* 00FD4D80 ALL 0002 PCAUTH 00F8AB80 ALL 0003 RASP 00F8C100 ALL 0004 TRACE 00F8BE00 ALL 0005 GRS 00F8BC00 ALL 0006 DUMPSRV 00F8DE00 ALL 0008 CONSOLE 00FA7E00 ALL 0009 ALLOCAS 00F8D780 ALL 000A SMF 00FA4A00 ALL 000B VLF 00FA4800 ALL 000C LLA 00FA4600 ALL 000D JESM 00F71E00 ALL 001F MQM1MSTR 00FA0680 ERROR ALL
If no job has the word ERROR against it in the SELECTION CRITERIA column, select option 0 - DEFAULTS on the main IPCS Options Menu panel to display the IPCS Default Values panel. Note the address space identifier (ASID) and press F3 to return to the previous panel. Use the ASID to determine the job name; the form is xxxxMSTR, where xxxx is the subsystem name.
The following command shows which ASIDs are in the dump data set:
LDMP DSN('SYS1.DUMPxx') SELECT(DUMPED) NOSUMMARY
This shows the storage ranges dumped for each address space.
Press F3 to return to the FORMAT AND DISPLAY THE DUMP panel, and type this name in the Subsystem name field.
Use this field if the data in a dump comes from more than one address space. If you only want to look at data from a particular address space, specify the identifier (ASID) for that address space.
The default value for this field is ALL, which displays information about all the address spaces relevant to the subsystem in the dump. Change this field by typing the 4-character ASID over the value displayed.
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