IT25846: Queue manager writes FDC with Probe RN194031 rrmCheckSubs when Full Repositories are both demoted

APAR status

• Closed as program error.

Error description

• When all Full Repositories for a given cluster name were
  demoted, other queue managers began to write failure data
  capture (FDC) records, mentioning queues in that cluster.
  
  The FDC records contain the following: RN194031 rrmCheckSubs
  "Missing subscription"
  
  Apart from the FDC files, which consume disk space, there is no
  impact to the function of the queue manager.
  

Local fix

Problem summary

• ****************************************************************
  USERS AFFECTED:
  Users who remove all Full Repositories for a given cluster name,
  by demoting them.
  
  
  Platforms affected:
  MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  In this case, the FDC records were written by code running on an
  internal schedule in the cluster repository manager process.
  The code that is checking that proper subscription records exist
  internally within the clustering component of the queue manager.
  
  The FDC is a "false positive".  That is, there is no problem.
  
  The reason the FDC appears is that no subscriptions exist for a
  particular queue or queue manager object, in the particular
  cluster for which there are now no Full Repositories.
  
  However, the fact there are no Full Repositories for that
  cluster means it is valid that there are no subscriptions.
  

Problem conclusion

• The MQ code has been corrected so that the subscriptions
  validity check on a  Partial Repository is only performed for a
  cluster in which there is at least one Full Repository known.
  This then means that, in the scenario described in this APAR,
  the FDCs are no longer written.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v9.1 CD    9.1.4
  v9.1 LTS   9.1.0.4
  
  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 BASE MP

• Fixed component ID

  5724H7271

Applicable component levels