IT27439: Setting MQ client CCSID to 1200 causes connections to fail with 2059 or 2540

APAR status

• Closed as program error.

Error description

• If you set the CCSID to 1200 either in the CHANNELS stanza of
  the mqclient.ini or via the equivalent app.config setting,
  connection to MQ fails with MQRC 2059 (MQRC_Q_MGR_NOT_AVAILABLE)
  or 2540 (MQRC_UNKNOWN_CHANNEL_NAME) and the reason for this is
  not apparent.
  
  The connection failure (2059/2540) is caused by conversion
  failure.
  

Local fix

Problem summary

• ****************************************************************
  USERS AFFECTED:
  Users who set CCSID to 1200 in CHANNEL stanza of mqclient.ini
  file.
  
  
  Platforms affected:
  MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  When CCSID is set to 1200 in CHANNEL stanza of mqclient.ini and
  any C or .Net application is used then connection fails with
  2059(MQRC_QMGR_NOT_AVAILABLE) in .Net application and
  2540(MQRC_UNKNOWN_CHANNEL_NAME) in C application.
  
  The 1200 CCSID is not supported for internal Queue Manager
  communication, since UTF-16 and UTF-32 is not supported.
  

Problem conclusion

• The MQ client code has been updated so that an error is reported
  if anything other than a valid single byte CCSID is specified in
  the mqclient.ini.
  If anything other than a valid single byte CCSID is used, then
  connection would end with 2539(MQRC_CHANNEL_CONFIG_ERROR).
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v8.0       8.0.0.13
  v9.0 LTS   9.0.0.8
  v9.1 CD    9.1.3
  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

  5724H7251

Applicable component levels