IT30127: Windows MQ Trigger monitor produces many FDC records if console codepage is changed

APAR status

• Closed as program error.

Error description

• A trigger monitor on Windows process a message and the triggered
  program changes the console CCSID to a value that is not
  supported by MQ, from this point on the trigger monitor produces
  a failure data capture (FDC) record with the following error
  codes;
  
  | Major Errorcode :- xecF_E_UNEXPECTED_RC
  |
  | Minor Errorcode :- xecX_E_TO_CCSID
  |
  | Probe Type :- MSGAMQ6118
  
  every time it handles a trigger message as it attempts and fails
  to convert an MQ message from the national language message
  catalogue for the console to the changed CCSID.
  

Local fix

• Save and restore the console codepage in the triggered programs
  
  FOR /F "tokens=*" %%A IN ('CHCP') DO FOR %%B IN (%%~A) DO
  SET CodePage=%%B
  REM
  REM Do actual trigger processing here....
  REM
  CHCP %CodePage%
  

Problem summary

• ****************************************************************
  USERS AFFECTED:
  Users triggering batch files and programs on Windows where the
  trigger program may change the console codepage (for example by
  calling CHCP) are potentially affected.
  
  
  Platforms affected:
  Windows
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  A program that was invoked by the trigger monitor altered the
  console codepage.  This changed the codepage for the whole
  trigger monitor process, causing FFSTs to be generated by the
  trigger monitor when it attempted to convert messages from the
  MQ message catalogue into the current console codepage.
  

Problem conclusion

• MQ has been altered to save the console codepage before calling
  a trigger program and then to restore it after.  This prevents a
  trigger program from changing the behaviour of the trigger
  monitor.
  
  Care should be taken when writing trigger programs to ensure
  that they do not adversely impact the environment of the trigger
  monitor.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v8.0       8.0.0.14
  v9.0 LTS   9.0.0.8
  v9.1 CD    9.1.4
  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