MustGather: A hang occurs when running WebSphere Application Server for z/OS
 Technote (FAQ)
 
Problem
MustGather for problems with WebSphere® Application Server hang problems. Gathering the information before calling IBM™ support will help familiarize you with the troubleshooting process and save you time.
 
 
Solution
Hang specific MustGather information:

If you have not contacted support click: MustGather: Read first for WebSphere Applicaiton Server for z/OS link.

  1. Obtain the trace

    Ensure that the Trace output is being written to sysprint using this MVS modify command:
    f bbodmgr,tracetosysprint=yes

    Note: When setting the trace, case is important in the tracejava keyword. If using SDSF to enter commands, use the SDSF extended command line; otherwise SDSF makes the string uppercase.

    Issue MVS modify command:
    f control_region_name,tracejava='com.ibm.*=all=enabled'

    Let run for 30 seconds.

    Issue MVS modify command:
    f control_region_name,traceinit
    to turn off the trace.

  2. Dump hanging address spaces

    DUMP COMM=(Descriptive name for this WebSphere dump)
    R rn,SDATA=(CSA,SQA,RGN,TRT,GRSQ,LPA,LSQA,SUM,NUC,PSA),CONT
    R rn,JOBNAME=(OMVS,control_region_name, servant_region_name),CONT
    R rn,DSPNAME=('OMVS'.*),END

  3. Send documentation

    FTP the Control and Servant Region joblogs.
    FTP the tersed dump in binary format.

    Review the information in the following link before sending documentation to IBM:
    Submitting Diagnostic Information to IBM.

For a listing of all technotes search the WebSphere Application Server for z/OS support site.
 
Related information
Submitting Information to IBM

Steps to getting support

MustGather: Read first

 
 


Document Information


Product categories: Software > Application Servers > Distributed Application & Web Servers > WebSphere Application Server for z/OS > Hangs/Performance Degradation
Operating system(s): z/OS
Software version: 5.1
Software edition:
Reference #: 1181842
IBM Group: Software Group
Modified date: Dec 28, 2004