IT27745: Incorrect error handling by amqrmppa process while using messageselectors

APAR status

• Closed as program error.

Error description

• After the unexpected termination of an MQ process, the following
  FDC is generated when using message selectors.
  
  | Probe Id          :- KN481067
                                                      |
  | Application Name  :- MQM
                                                    |
  | Component         :- ksiGetCachedSelectionTree
                   |
  ...
  | Major Errorcode   :- xecL_W_SEM_OWNER_DIED                 |
  ...
  | Arith1            :- 276848761 (0x10806079)
                                 |
  | Comment1          :- Bad RC from xcsRequestMutexSem     |
  
  This FDC indicates that the process holding lock on selection
  table has died without releasing the lock. This could lead to
  hang in endmqm command without any FDC or error returned
  

Local fix

Problem summary

• ****************************************************************
  USERS AFFECTED:
  MQ users using SelectionString may be affected.
  
  
  Platforms affected:
  MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  An error in MQ's recovery logic when handling a dead process
  meant that lock resources were not fully cleaned up after the
  dead process was detected.
  

Problem conclusion

• The code has been modified to correctly clean up on detection of
  a dead process.
  
  This fix addresses only the handling of dead processes, and does
  not prevent process termination due to user interaction or other
  unrelated code defects.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v9.1 CD    9.1.4
  v9.1 LTS   9.1.0.6
  v9.x CD    T.B.C.
  
  The latest available maintenance can be obtained from
  'WebSphere MQ Recommended Fixes'
  http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037
  
  If the maintenance level is not yet available information on
  its planned availability can be found in 'WebSphere MQ
  Planned Maintenance Release Dates'
  http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309
  ---------------------------------------------------------------
  

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

  IBM MQ APPL M20

• Fixed component ID

  5725Z0900

Applicable component levels