IT14816: .NET client fails with '2195' MQRC_UNEXPECTED_ERROR during MQGETcall

APAR status

• Closed as program error.

Error description

• MQ Managed .NET client fails with '2195' MQRC_UNEXPECTED_ERROR
  during  a MQGET call.
  
  System.ArgumentException: Offset and length were out of bounds
  for the array or count is greater than the number of elements
  from index to the end of the source collection.
     at System.Buffer.BlockCopy(Array src, Int32 srcOffset, Array
  dst,Int32 dstOffset, Int32 count)    at
  IBM.WMQ.MQFAP.zstMQGET(ManagedHconn remoteHconn, Hobj hObj,
  MQMessageDescriptor& mqmd, MQGetMessageOptions& mqgmo, Int32
  bufferLength, Byte[] buffer, Int32& dataLength, MQLPIGetOpts
  lpiGetOpts, Int32& compCode, Int32& reason) in
  C:\Users\IBM_ADMIN\pc\winnt\managed\MQA.cs:line
  6962
  000010EF 14:19:36.437585   1944.9      IBM.WMQ.MQQueue#019IBME9
  throwing MQException: cc=2 rc=2195
  000010F0 14:19:36.437585   1944.9      New MQException
  CompCode: 2 Reason: 2195
  000010F1 14:19:40.945993   1944.9     (03)----}!
  MQDestination.Get(MQMessage,MQGetMessageOptions,int)
  rc=(Unknown(2195))
  000010F2 14:19:42.271995   1944.9     (02)---}!
  MQDestination.Get(MQMessage,MQGetMessageOptions)
  rc=(Unknown(2195))
  000010F3 14:19:43.395197   1944.9     (01)--}!
  MQDestination.Get(MQMessage) rc=(Unknown(2195))
  

Local fix

• Modify the putting application to ensure that message lengths
  are 4 byte aligned
  

Problem summary

• ****************************************************************
  USERS AFFECTED:
  Those using MQ .NET client application in managed mode.
  
  
  Platforms affected:
  Windows
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  A coding error in the buffer allocation logic of MQGET call in
  the MQ managed .NET client caused System.ArgumentException to be
  thrown while getting the last segment of the message from the
  server, if the message size was not 4-byte aligned.
  

Problem conclusion

• MQ .Net Managed client logic has been updated to correct the
  buffer allocation during MQGET call.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v8.0       8.0.0.6
  v9.0 CD    9.0.1
  v9.0 LTS   9.0.0.1
  
  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

  WMQ BASE MULTIP

• Fixed component ID

  5724H7251

Applicable component levels

• R800 PSY

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