IT21351: Deleted cluster queues may become active as a result of refreshing full repository queue managers

APAR status

• Closed as program error.

Error description

• A Cluster queue which has been deleted from the cluster by
  setting the CLUSTER or CLUSNL attributes to (' '), can re-appear
  in the cluster configuration during a REFRESH CLUSTER operation
  issued against a full repositories for given cluster(s).
  
  This problem can be observed by its existence in the outputs of
  the MQSC display commands and seeing the 'deleted' queue
  referenced when it should not be.
  
  Due to timing windows caused by overlapping REFRESH CLUSTER
  commands (or at least, the flow of data originating from them)
  the problem may not always arise such that the deleted queue
  remains deleted in configuration.
  

Local fix

Problem summary

• ****************************************************************
  USERS AFFECTED:
  Users of Queue Manager Clusters who have removed queues from the
  cluster configuration and subsequently issue refresh cluster
  against one or more full repositories in that cluster.
  
  
  Platforms affected:
  MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  A timing windows caused by overlapping REFRESH CLUSTER commands
  (or at least, the flow of data originating from them) had the
  potential to cause a deleted queue to be republished as a live
  queue to other full repositories.
  

Problem conclusion

• The MQ queue manager cluster repository manager logic has been
  updated to ensure that deleted queue records are republished
  correctly to other repositories on issuing REFRESH CLUSTER.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v8.0       8.0.0.8
  v9.0 CD    9.0.4
  v9.0 LTS   9.0.0.3
  
  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:

  PI85738

Fix information

• Fixed component name

  WMQ BASE MULTIP

• Fixed component ID

  5724H7251

Applicable component levels

• R800 PSY

     UP