PH20735: DMGR CR ISSUED ABEND0C4-11 DUMP AFTER STOP COMMAND.

APAR status

• Closed as program error.

Error description

• The ABEND0C4 occurs when referencing a client's native control
  block that has been freed. The native z/OS Control block being
  referenced is IHAASCB (ASCB). The code in control at the time of
  the ABEND was driven from the server-side of a Local
  Communication connection (LCOM) for the cleanup of a connection.
  There are a number of different scenarios that can drive the
  cleanup code of a connection. This appears to be somewhat of
  timing related. If this path got control before the OS freed the
  client's ASCB then there would not have been an ABEND; or if the
  targeted resources being cleaned up where previously cleaned up
  on other cleanup paths.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server                                      *
  *                  V8.5                                        *
  ****************************************************************
  * PROBLEM DESCRIPTION: WebSphere Application Server for z/OS   *
  *                      ABEND0C4 in bboclsur after stop         *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  A stop was issued to terminate the server.  During the
  cleanup
  of "server-side" local communication connections established
  resource managers (RESMGRs) are deleted.  An ABENDS0C4 was
  encountered when referencing the client's ASCB control block
  from the server.  Due to timing windows, the client had
  progressed far enough in termination to have z/OS release
  its
  address space control blocks.  Also, involved in this
  scenario, the client avoided "normal" connection cleanup
  (ie. a cancel was used to terminate the client).
  

Problem conclusion

• Code has been modified to not reference the client side
  control
  blocks to obtain information needed to delete established
  RESMGRs related to the local communication connections.
  
  The fix for this APAR is targeted for inclusion in fix pack
  8.5.5.18 and 9.0.5.4.  For more information, see
  'Recommended
  Updates for WebSphere Application Server':
  http://www.ibm.com/support/docview.wss?
  rs=180&uid=swg27004980
  

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