IT43646: Clustering recovery and diagnostic improvements

APAR status

• Closed as program error.

Error description

• There is a lack of error information where potential queue
  manager cluster disaster recovery steps have been taken and
  perhaps not completed in a test scenario.
  IBM MQ is able to determine that updates for cluster objects may
  not have originated by the "production" / original version of a
  given queue manager.
  
  The problem being addressed is to provide additional information
  to customers to warn about such updates and to where
  appropriate, use updates from the originating queue managers,
  should they be put back into the configuration, out of sequence
  and after an unsuccessful disaster recovery test.
  
  Additional tracing is also provided should recreation of
  scenarios be required to be performed for root cause analysis.
  

Local fix

Problem summary

• ****************************************************************
  USERS AFFECTED:
  Users of Queue Manager Clusters performing disaster recovery
  testing and experience subsequent and unexpected missing cluster
  objects resulting in application errors
  
  
  Platforms affected:
  MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  Though MQ attempts to warn users about objects being removed
  from their configurations, they are not always regarded as
  important by users.
  Should a valid but potentially out of date object be received
  after an incomplete disaster recovery test, MQ will when
  appropriate use the version of the object received in order to
  mitiagte object loss and will warn users of such activity.
  

Problem conclusion

• MQ will provide additional error messages to users and may use
  objects previously deemed to be out of date, where they have
  originated by the appropriate queue manager.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v9.2 LTS   9.2.0.20
  v9.3 LTS   9.3.0.10
  v9.x CD    9.3.3
  
  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:

Fix information

• Fixed component name

  MQ BASE V9.2

• Fixed component ID

  5724H7281

Applicable component levels