PH55657: PUBSUB STATUS(ERROR)

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• The following messages were seen:
  
  In CHIN job log:
  
  CSQX952I cpf CSQXJST Distributed Pub/Sub Offloader task
  attached
  ...
  CSQT975I cpf CSQXDPSC Distributed Pub/Sub Controller has started
  ...
  CSQX036E cpf CSQXSUPR Unable to open
  TOPIC(SYSTEM.BROKER.DEFAULT.STREAM),
  MQCC=2 MQRC=2531 (MQRC_PUBSUB_INHIBITED)
  
  
  In MSTR job log:
  
  CSQM073I cpf CSQMDURR Loading of durable subscribers started
  CSQM074I cpf CSQMDURR Loading of durable subscribers finished
  
  
  Pub/Sub applications and workloads fail with
  MQRC_PUBSUB_INHIBITED.
  
  When running DISPLAY PUBSUB the following is displayed:
  CSQM293I cpf CSQMDRTC 1 PUBSUB FOUND MATCHING REQUEST CRITERIA
  CSQM201I cpf CSQMDRTC  DISPLAY PUBSUB DETAILS
  TYPE(LOCAL)
  
  QMNAME(qmgr)
  
  STATUS(ERROR)
  
  SUBCOUNT()
  
  TPCOUNT()
  
   END PUBSUB DETAILS
  
  CSQ9022I cpf CSQMDRTC ' DISPLAY PUBSUB' NORMAL COMPLETION
  
  
  An internal MQPUT call is failing with MQRC_HOBJ_ERROR in
  CSQMPUTV as an invalid handle is being used on the MQPUT. The
  internal MQPUT call is being made by the DURCON01 durable
  subscriber service task. It has just finished the initial
  process of reading all of the durable subscriptions on the
  SYSTEM.DURABLE.SUBSCRIBER.QUEUE queue and has issued message
  CSQM074I to indicate this. It then goes on to create the
  default subscription if it wasn't found on the
  SYSTEM.DURABLE.SUBSCRIBER.QUEUE queue. The problem is that the
  queue was closed after reading the durable subscriptions, which
  results in the MQPUT to the SYSTEM.DURABLE.SUBSCRIBER.QUEUE
  queue failing with MQRC_HOBJ_ERROR.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of IBM MQ for z/OS Version         *
  *                 9 Release 4 Modification 0.                  *
  ****************************************************************
  * PROBLEM DESCRIPTION: On Queue Manager startup PubSub's       *
  *                      status is reported as STATUS(ERROR).    *
  ****************************************************************
  If a Queue Manager is started with an empty
  SYSTEM.DURABLE.SUBSCRIBER.QUEUE and the subscription
  SYSTEM.DEFAULT.SUB is not included in any of the CSQ4IN*
  datasets then an attempt to create the subscription is made via
  an alternative mechanism.
  
  This attempt fails with an S0C4-11 abend in CSQMPUT leading to
  PubSub's status changing to ERROR.
  
  Note that by default SYSTEM.DEFAULT.SUB is defined and included
  in CSQ4INST and is required to use publish/subscribe.
  

Problem conclusion

• The code has been updated so the S0C4-11 abend in CSQMPUT
  leading to PubSub's status changing to ERROR will not occur. No
  attempt to create the SYSTEM.DEFAULT.SUB subscription will be
  made if it is not included in CSQ4INST or already defined
  elsewhere.
  

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:

  UI98006

Modules/Macros

• CSQMDURR
  

Fix information

• Fixed component name

  IBM MQ Z/OS V9

• Fixed component ID

  5655MQ900

Applicable component levels

• R400 PSY UI98006

     UP24/09/25 P F409

Fix is available

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