IZ02442: CHILD BROKER FAILS TO REJOIN BROKER TOPOLOGY AND CRASHES AFTER INCORRECT USE OF CLRMQBRK

WebSphere MQ V6.0 for iSeries Fix Pack 6.0.2.3
WebSphere MQ V6.0 Fix Pack 6.0.2.3
WebSphere MQ 6.0 for HP OpenVMS Alpha and Itanium - Fix Pack 6.0.2.7
WebSphere MQ 6.0 for HP OpenVMS Alpha and Itanium - Fix Pack 6.0.2.10 (FP03)

APAR status

• Closed as program error.

Error description

• Typically probes PU524040 on child broker and PU533010 from
  parent broker will be generated.
  

Local fix

• After breaking parent relationship child Broker restart don't
  fails.
  

Problem summary

• ****************************************************************
  USERS AFFECTED:
  Users not following standard procedure when running the
  clrmqbrk command to remove references to a related broker.
  
  Platforms affected:
  All Distributed (iSeries, all Unix and Windows)
  ****************************************************************
  PROBLEM SUMMARY:
  The clrmqbrk command is used to clear the brokers memory of a
  neighbouring related broker (parent or child). We need to
  clear the memory of the broker at each end of the relationship.
  This means that the clrmqbrk command or an equivalent should be
  issued to both the parent and the child broker.
  
  Executing clrmqbrk command at only one end, that is either at
  parent or child, might leave the broker topology in an
  inconsistent state. When the clrmqbrk command is executed only
  at the child end, the child broker fails to rejoin the broker
  topology and crashes.
  

Problem conclusion

• The problem is due to the incorrect state of the relationship
  between the child and parent after executing clrmqbrk only
  at the child end. When the child broker is trying to rejoin the
  broker topology the parent returns TOPOLOGY error and sends an
  exception report to the child broker. The child broker fails to
  process this exception report and crashes. Appropriate code
  changes has been done to process the exception report correctly.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
                     v6.0
  Platform           Fix Pack 6.0.2.3
  --------           --------------------
  Windows            U200279
  AIX                U811346
  HP-UX (PA-RISC)    U811630
  HP-UX (Itanium)    U811631
  Solaris (SPARC)    U811632
  Solaris (x86-64)   U811633
  iSeries            SI27288
  Linux (x86)        U811634
  Linux (x86-64)     U811635
  Linux (zSeries)    U811636
  Linux (Power)      U811637
  Linux (s390x)      U811638
  
  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

  WMQ LIN X86 V6

• Fixed component ID

  5724H7204

Applicable component levels

• R600 PSY

     UP