PM74832: AFTER APPLYING UK81710 OR UK81711, MDB LISTENERS USING A DURABLESUBSCRIPTION MAY FAIL WITH MQRC_INVALID_SU 12/10/11 PTF PECHANGE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• After applying UK81710 or UK81711 to MQ, an error may occur
  when processing messages for an Activation Specification or MDB
  listener.
  The failure occurs when the Activation Spec or MDB listener are
  using a durable subscriber and the "clone support" option is
  enabled. When a message arrives on the subscribed topic, an
  error in the checking for the clone support option results in
  the error:
  com.ibm.msg.client.jms.DetailedJMSException: JMSWMQ2008: Failed
  to open MQ queue 'SYSTEM.MANAGED.DURABLE.CA49DEE2011470FB'.  JMS
  attempted to perform an MQOPEN, but WebSphere MQ reported an
  error.  Use the linked exception to determine the cause of this
  error.  Check that the specified queue and queue manager are
  defined correctly.:com.ibm.mq.MQException: JMSCMQ0001: WebSphere
  MQ call failed with compcode '2' ('MQCC_FAILED') reason '2523'
  ('MQRC_INVALID_SUBSCRIPTION').
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 7 *
  *                 Release 0 Modification 1 and Release 1       *
  *                 Modification 0.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: In WSAS, a subscription can fail with   *
  *                      MQRC 2523 MQRC_INVALID_SUBSCRIPTION,    *
  *                      when an MDB listener is configured to   *
  *                      service a durable subscription, and the *
  *                      connection factory for the listener has *
  *                      "Allow cloned durable subscriptions"    *
  *                      selected.                               *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  PM71101 changed the code path for an spiSubscribe with the
  lpiSDO_Open_Destination option specified.  Causing a check to be
  made on the subscription identity for the subscribe in some
  situations.  However, when lpiSDO_Open_Destination is set a
  subscription identity is not specified and as a result of this
  check a subscription will fail with MQRC 2523
  MQRC_INVALID_SUBSCRIPTION.
  
  In WSAS, for a cloned durable subscription, the MDB listener
  registers the subscription in the control region with an
  spiSubscribe call including lpiSDO_JOIN_SHARED in the subscribe
  options.  Later, when a message arrives on the subscription
  destination queue, a message reference is passed to the servant
  region for processing.  To be able to get the message, the
  destination queue for the subscription needs to be opened.  This
  is done using spiSubscribe with the lpiSDO_OPEN_DESTINATION
  option set (lpiSDO_JOIN_SHARED is not specified on this call).
  A change in the JOIN options is interpreted as an attempt to
  change the subscription - which is allowed only if a
  subscription identity is supplied.  Since the call doesn't
  provide a subscription identity (as lpiSDO_Open_Destination is
  set), the spiSubscribe is rejected with
  MQRC_INVALID_SUBSCRIPTION.
  

Problem conclusion

• The code has been changed so that the subscription identity is
  not checked if a subscribe has set lpiSDO_Open_Destination.
  010Y
  100Y
  CSQMSUB
  CSQMSUBI
  

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:

  UK90224 UK90225 IV42169

Modules/Macros

• CSQMSUB  CSQMSUBI
  

Fix information

• Fixed component name

  WMQ Z/OS V7

• Fixed component ID

  5655R3600

Applicable component levels

• R010 PSY UK90224

     UP13/02/05 P F302 Ø

• R100 PSY UK90225

     UP13/02/05 P F302 Ø

Fix is available

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