PI34033: WAS Z/OS LOCAL COMMUNICATION CLIENT MAY HANG IN TERMINATION.

8.5.5.5: WebSphere Application Server V8.5.5 Fix Pack 5
8.5.5.6: WebSphere Application Server V8.5.5 Fix Pack 6
8.0.0.11: WebSphere Application Server V8.0 Fix Pack 11
8.5.5.7: WebSphere Application Server V8.5.5 Fix Pack 7
8.5.5.8: WebSphere Application Server V8.5.5 Fix Pack 8
8.0.0.12: WebSphere Application Server V8.0 Fix Pack 12
8.5.5.9: WebSphere Application Server V8.5.5 Fix Pack 9
8.5.5.10: WebSphere Application Server V8.5.5 Fix Pack 10
8.5.5.11: WebSphere Application Server V8.5.5 Fix Pack 11
8.0.0.13: WebSphere Application Server V8.0 Fix Pack 13
8.5.5.12: WebSphere Application Server V8.5.5 Fix Pack 12
8.0.0.14: WebSphere Application Server V8.0 Fix Pack 14
8.5.5.13: WebSphere Application Server V8.5.5 Fix Pack 13
8.0.0.15: WebSphere Application Server V8.0 Fix Pack 15
8.5.5.14: WebSphere Application Server V8.5.5 Fix Pack 14
8.5.5.15: WebSphere Application Server V8.5.5 Fix Pack 15
8.5.5.14: WebSphere Application Server V8.5.5 Fix Pack 14
8.5.5.17: WebSphere Application Server V8.5.5 Fix Pack 17
8.5.5.20: WebSphere Application Server V8.5.5.20
8.5.5.18: WebSphere Application Server V8.5.5 Fix Pack 18
8.5.5.19: WebSphere Application Server V8.5.5 Fix Pack 19
8.5.5.16: WebSphere Application Server V8.5.5 Fix Pack 16
8.5.5.21: WebSphere Application Server V8.5.5.21

APAR status

• Closed as program error.

Error description

• A WebSphere Application server for z/OS Local Communication
  (LCOM) Client may hang in termination.  The LCOM Client, client
  and server local to the same system using Program Call (PC) /
  Program Return (PR) communication, may hang after exiting the
  main().   There is a termination path in the Connection
  cleanup code that attempts to attach the JVM to the current
  thread to drive JVM services.  The caller of the attach call
  is waited and the termination of the client address space is
  hung.
  
  The client will have to be cancelled manually.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server V8.0                                 *
  ****************************************************************
  * PROBLEM DESCRIPTION: WebSphere Application server for z/OS   *
  *                      Local Communication Client may hang in  *
  *                      termination.                            *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  A WAS z/OS Client using Local Communication may hang with the
  following stack trace:
  CEEOPCW()
  pthread_cond_wait()
  j9thread_monitor_enter()
  allocateVMThread()
  protectedInternalAttachCurrentThread()
  j9sig_protect()
  AttachCurrentThreadAsDaemon()
  getJavaEnv()
  BOSS_JavaEnv::getEnv(JavaVM_*)()
  CF_Local_Connection::cancelAll_io()()
  CF_Local_Connection_Object_Manager::cleanUp(_jobject*)()
  CleanUpSessionManager()
  CleanUpList::call_cleanup_routines(btcb*)()
  CallCleanUpRoutines(RasExit_Type,btcb*)()
  RasAtProcessExit()
  The hang is caused by attempting to attach the JVM to the
  current thread during termination.  In this scenario the
  calling thread is waited and the client termination is
  hung.
  

Problem conclusion

• Local Communication termination code has been updated to not
  drive the code to attach the JVM during termination of the
  client environment.
  
  Please refer to the Recommended Updates page for delivery
  information:
  http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
  
  In addition, please refer to URL:
  http://www.ibm.com/support/docview.wss?rs=404&uid=swg27006970
  for Fix Pack PTF information.
  

Temporary fix

Comments

APAR Information

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

• 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

• R800 PSY

     UP