PM04574: ABEND0C4 IN APP SERVER SR WHEN IN MIXED CELL ENVIRONMENT

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• In a mixed cell environment with Daemon at V7 of WebSphere
  Application Server, and Node at V6.1, a V6.1 application server
  servant region (SR) may terminate unexpectedly with abend S0C4.
  This problem is more likely to occur during STOP processing of
  the server, but it could also occur during normal server
  runtime.
  
  In the reported case, a TDUMP was taken for the 0C4 abend. The
  failing thread had the following traceback:
  
  Native traceback:
  _TDUMP
  j9dump_create
  doSystemDump
  protectedDumpFunction
  j9sig_protect
  runDumpFunction
  triggerDumpAgents
  dumpCrashData
  j9sig_protect
  structuredSignalHandler
  masterSynchSignalHandler
  __zerro
  __zerros
  CEEHDSP
  CEEOSIGJ
  CELQHROD
  CEEOSIGG
  CELQHROD
  CurrentRequestLanguage::btcb_Java_RMI_On()
  Java_com_ibm_ws390_orb_ClientDelegate_createRequestCFW
  RUNJAVATHREAD
  javaProtectedThreadProc
  j9sig_protect
  javaThreadProc
  thread_wrapper
  CELQPCMM
  
  Java traceback:
  com/ibm/ws390/orb/ClientDelegate.createRequestCFW
  com/ibm/ws390/orb/ClientDelegate.createRequest
  com/ibm/ws390/orb/ClientDelegate.request
  org/omg/CORBA/portable/ObjectImpl._request  ObjectImpl.java:458
  com/ibm/ws/management/_ControlAdminService_Stub.handleServantNot
    ifications         _ControlAdminService_Stub.java:247
  com/ibm/ws/management/event/PushToControlNotificationSender.hand
    leNotifications    PushToControlNotificationSender.java:93
  com/ibm/ws/management/event/PushRemoteSender.pushNotifications
    PushRemoteSender.java:56
  com/ibm/ws/management/event/AbstractPushRemoteSender.alarm
    AbstractPushRemoteSender.java:191
  com/ibm/ejs/util/am/_Alarm.run      _Alarm.java:90
  com/ibm/ws/util/ThreadPool$Worker.run
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of WebSphere Application Server    *
  *                 V7.0                                         *
  ****************************************************************
  * PROBLEM DESCRIPTION: ABEND0C4 occurred in WebSphere          *
  *                      for z/OS Application Server Servant     *
  *                      Region when running in a mixed          *
  *                      cell environment.                       *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The servant (SR) is running daemon level code for its Task
  related recovery code.  The size of a task related piece of
  storage has changed between the daemon level of code and the
  node level of code.  The storage is internally called the TRDI
  (bbootrdi.mac). In the SR, the node level of code obtains and
  initializes the TRDI, but the daemon level of code releases the
  TRDI.  This resulted in releasing more storage than was
  intended, and corrupted structures in the related storage.
  This caused the ABENDS0C4 in
  CurrentRequestLanguage::btcb_Java_RMI_On() which attempts to
  write into the TRDI.
  
  Also, to confirm this problem, ABEND378 REASON=24 abends have
  been observed in the LOGREC.
  

Problem conclusion

• Code has been modified in the servant environment to use the
  node level of code for task recovery.
  
  APAR PM04574 requires changes to documentation.
  
  NOTE: Periodically, we refresh the documentation on our
  Web site, so the changes might have been made before you
  read this text. To access the latest on-line
  documentation, go to the product library page at:
  
  http://www.ibm.com/software/webservers/appserv/library
  
  The following changes to the WebSphere Application Server
  Version 7.0 Information Center will be made available in
  June, 2010.
  
  The table "WebSphere Application Server for z/OS abend codes"
  that is contained in the topic "Abend reason codes" will
  be updated to include the following new EC3 ABEND reason code:
  
  Abend Code Abend Reason   Explanation    Suggested Action
  EC3        04010011       Internal        IBM Internal Only
                            product error
  
  APAR PM04574 is currently targeted for inclusion in Service
  Level (Fix Pack) 7.0.0.11 of WebSphere Application Server V7.0
  
  Please refer to URL:
  //www.ibm.com/support/docview.wss?rs=404&uid=swg27006970
  for Fix Pack availability.
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

  PM04551

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  WEBSPHERE FOR Z

• Fixed component ID

  5655I3500

Applicable component levels

• R700 PSY UK57722

     UP10/06/17 P F006

Fix is available

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