PI06816: WMQ Z/OS: RESTART OF A SHARED CHANNEL RESULTS IN CSQX534E CHANNEL IS STOPPED 14/01/30 PTF PECHANGE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• The customer was running WMQ 7.1.0 QS on three LPARs
  with the group definition of a sender channel.
  When restarting of the shared channel, on the sending
  channel can receive a CSQX534E.
  .
  +CSQX500I SSID CSQXRCTL Channel CHANNEL,NAME started
  +CSQX534E SSID CSQXRCTL Channel CHANNEL,NAME is stopped
  .
  
  Additional Symptom(s) Search Keyword(s):
  

Local fix

• N/A
  

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: V710 Shared channels may stop retrying  *
  *                      early. Also applies to V701 after       *
  *                      applying PTF for APAR PM84391.          *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  A shared channel running on a V710 channel initiator may stop
  retrying before its maximum short or long retry counts are
  reached. This problem can also occur at V701 after applying
  the PTF for APAR PM84391.
  
  When a channel is explicitly stopped, a local channel status
  record is saved to record the new STOPPED state. When the
  channel is subsequently restarted, this status record is
  normally removed.
  
  For a shared channel, however, the START command may originate
  from another queue manager in the QSG. This will cause it to
  bypass the usual START CHANNEL command logic that would clear
  the STOPPED status. During retry processing, the STOPPED status
  record may cause the channel to stop automatically retrying.
  
  When the channel stops retrying, a CSQX534E "Channel is stopped"
  message will be seen on the channel initiator joblog.
  

Problem conclusion

• Processing has been amended to ensure that a shared channel
  continues to retry until the retry count limits are reached.
  010Y
  100Y
  CSQXRCMS
  CSQXRCSI
  

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:

  UI14903 UI14904

Modules/Macros

• CSQXRCMS CSQXRCSI
  

Fix information

• Fixed component name

  WMQ Z/OS V7

• Fixed component ID

  5655R3600

Applicable component levels

• R010 PSY UI14903

     UP14/03/04 P F403 Ø

• R100 PSY UI14904

     UP14/03/04 P F403 Ø

Fix is available

• Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.