PI53926: Providing the ability for a queue manager to be unable to start an outgoing shared TCP channel

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Changes to allow a queue manager to be specified as being unable
  to have a shared TCP channel started on it, when it has an
  active channel initiator and is a memeber of a queue shared
  group.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 7 *
  *                 Release 1 Modification 0.                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: This APAR enables the ability to        *
  *                      restrict shared outgoing TCP channels   *
  *                      from being started on specified queue   *
  *                      managers through a service parm.        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  All queue managers within a queue sharing group, with an active
  channel initiator may be eligible to have a outgoing shared
  channel started on it. The starting of a outgoing shared channel
  can either be fixed to only a single queue manager, or any
  eligible queue manager in the QSG. Any queue manager with
  connection to the QSG, DB2 and the appropriate communication
  subsystem, and spare capacity (not at max channels or max
  channels for the communication method) can be selected. However
  it may not be appropriate for some qmgrs in the QSG to be able
  to start outgoing channels while still having an active channel
  initiator. This APAR implements the ability to restrict the
  starting of outgoing shared channels using TCP to be started on
  specific qmgrs.
  

Problem conclusion

• A new service parm has been introduced to allow a queue manager
  to be restricted from starting outgoing shared TCP channels.
  Please contact IBM support for further details on how to enable
  this.
  
  --------Knowledge Center Changes--------
  A new page will be added knowledge center at location
  >WebSphere MQ
   >z/OS Messages and Codes
    >Distributed queuing messages (CSQX...)
  
  Title -
  CSQX117I: csect-name Outgoing shared channels
  are restricted from starting for TCP communication
  
  Contents-
   Explanation -
  A CHISERVP() service parm flag has been set which
  restricts the ability for this queue manager from
  being able to start an outgoing shared TCP channel.
  For more details on this flag contact IBM support.
  
   Severity -
  0
  
   System action -
  Processing continues. This queue manager will be unable
  to start outgoing shared TCP channels, and will not be
  selected during MQ workload balanced start of a shared
  channel. This restriction will persist until the flag
  is disabled and channel initiator is restarted.
  
  ----------------------------------------
  
  A link to the new page will also be added to page at
  location
  >WebSphere MQ
   >z/OS Messages and Codes
    >Distributed queuing messages (CSQX...)
  
  With the title -
  CSQX117I: csect-name Outgoing shared channels
  are restricted from starting for TCP communication
  ----------------------------------------
  100Y
  101Y
  102Y
  103Y
  104Y
  105Y
  CSQFXTXC
  CSQFXTXE
  CSQFXTXF
  CSQFXTXK
  CSQFXTXU
  CSQXQMPU
  CSQXSPRI
  

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:

  PI54073 UI35426 UI35427 UI35428 UI35429 UI35430 UI35431

Modules/Macros

• CSQFXTXC CSQFXTXE CSQFXTXF CSQFXTXK CSQFXTXU CSQXQMPU CSQXSPRI
  

Fix information

• Fixed component name

  WMQ Z/OS V7

• Fixed component ID

  5655R3600

Applicable component levels

• R100 PSY UI35426

     UP16/04/12 P F604  

• R101 PSY UI35427

     UP16/04/12 P F604  

• R102 PSY UI35428

     UP16/04/12 P F604  

• R103 PSY UI35429

     UP16/04/12 P F604  

• R104 PSY UI35430

     UP16/04/12 P F604  

• R105 PSY UI35431

     UP16/04/12 P F604  

Fix is available

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