IT12125: MESSAGE FLOW STATISTICS SHOWS MESSAGES WITH ERROR EVEN WHEN THERE HAS NOT BEEN AN ERROR

APAR status

• Closed as program error.

Error description

• When using a message flow containing an MQInput node and message
  flow statistics is enabled, then it is possible that the
  statistics output will report a "messages with error" count even
  when there has not been an error.
  
  This occurs when the MQInput node tries to MQGET a message and
  the buffer provided on the MQGET call is not large enough. The
  MQInput node handles the error returned from this by increasing
  its buffer size and trying again. This is not an error scenario
  and should not result in an increase in the "messages with
  error" (field MFLERMG in SMF117 records on zOS) in the message
  flow statistics.
  
  This is particularly visible when using the statistics display
  in the web user interface to look at errors, when you might
  occasionally see a "messages with error" count greater than 0
  displayed.
  

Local fix

• N/A
  

Problem summary

• ****************************************************************
  USERS AFFECTED:
  All users of WebSphere Message Broker V8.0 and IBM Integration
  Bus V9.0 who use the MQInput node and enable message flow
  accounting and statistics.
  
  
  Platforms affected:
  MultiPlatform, z/OS
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  When using a message flow containing an MQInput node and message
  flow statistics is enabled, then it is possible that the
  statistics output will report a "messages with error" count even
  when there has not been an error.
  
  This occurs when the MQInput node tries to MQGET a message and
  the buffer provided on the MQGET call is not large enough. The
  MQInput node handles the error returned from this by increasing
  its buffer size and trying again. This is not an error scenario
  and should not result in  an increase in the "messages with
  error" (field MFLERMG in SMF117 records on zOS) in the message
  flow statistics.
  
  
  There are a number of resource name changes between WebSphere
  Message Broker and IBM Integration Bus Version 9.0.  For details
  visit
  http://pic.dhe.ibm.com/infocenter/wmbhelp/v9r0m0/topic/com.ibm.e
  tools.mft.doc/bb23814_.htm
  

Problem conclusion

• The product has changed to not count MQGET errors which are
  handled for statistics purposes.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v8.0       8.0.0.8
  v9.0       9.0.0.6
  
  The latest available maintenance can be obtained from:
  http://www-01.ibm.com/support/docview.wss?rs=849&uid=swg27006041
  
  If the maintenance level is not yet available,information on
  its planned availability can be found on:
  http://www-1.ibm.com/support/docview.wss?rs=849&uid=swg27006308
  ---------------------------------------------------------------
  

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

  INTEGRATION BUS

• Fixed component ID

  5724J0530

Applicable component levels

• R900 PSY

     UP