IT32726: MQ V9.1.5 CD classes for Java application gets EOFException whenprocessing PCF messages containing MQI accounting data

APAR status

• Closed as program error.

Error description

• An IBM MQ classes for Java application processes PCF response
  messages containing MQI accounting data from a queue manager.
  
  The application runs successfully when it is using the IBM MQ
  V9.1.4 CD classes for Java. However, after upgrading to V9.1.5
  CD, the application reports the following exception:
  
  java.lang.RuntimeException: java.io.EOFException
      at
  com.ibm.mq.headers.MQHeaderList.write(MQHeaderList.java:660)
      at
  com.ibm.mq.MQMessage$MQMessageHeaderList.write(MQMessage.java:24
  5)
      at
  com.ibm.mq.MQMessage.readPropertiesRfh2(MQMessage.java:3845)
      at
  com.ibm.mq.MQMessage.performProcessingAfterGet(MQMessage.java:33
  25)
      at com.ibm.mq.MQDestination.getInt(MQDestination.java:701)
      at com.ibm.mq.MQDestination.get(MQDestination.java:452)
      at com.ibm.mq.MQDestination.get(MQDestination.java:407)
      ......
  Caused by: java.io.EOFException
      at
  java.io.DataInputStream.readFully(DataInputStream.java:208)
      at
  com.ibm.mq.headers.internal.DataInputWrapper.readFully(MessageWr
  apper.java:528)
      at
  com.ibm.mq.headers.internal.store.ByteStore.readFrom(ByteStore.j
  ava:499)
      at com.ibm.mq.headers.internal.Header.read(Header.java:1053)
      at
  com.ibm.mq.headers.MQHeaderList.write(MQHeaderList.java:651)
      ......
  

Local fix

Problem summary

• ****************************************************************
  USERS AFFECTED:
  This issue affects users of the IBM MQ V9.1.5 CD classes for
  Java who have applications that process PCF messages containing
  MQI accounting data.
  
  
  Platforms affected:
  MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  In IBM MQ V9.1.5 CD, an internal change was made to the IBM MQ
  classes for Java to remove any null bytes from the end of String
  parameters (MQCFST) within PCF messages. However, the
  StringLength field within the MQCFST was not updated to reflect
  the new length of the parameter if null bytes were removed. As a
  result, the MQ classes for Java would fail to read any
  subsequent parameters within a PCF message correctly. This would
  result in exceptions similar to the ones shown below being
  thrown:
  
  Exception 1:
  ---------------
  java.lang.RuntimeException: java.io.EOFException
      at
  com.ibm.mq.headers.MQHeaderList.write(MQHeaderList.java:660)
      at
  com.ibm.mq.MQMessage$MQMessageHeaderList.write(MQMessage.java:24
  5)
      at
  com.ibm.mq.MQMessage.readPropertiesRfh2(MQMessage.java:3845)
      at
  com.ibm.mq.MQMessage.performProcessingAfterGet(MQMessage.java:33
  25)
      at com.ibm.mq.MQDestination.getInt(MQDestination.java:701)
      at com.ibm.mq.MQDestination.get(MQDestination.java:452)
      at com.ibm.mq.MQDestination.get(MQDestination.java:407)
      ......
  Caused by: java.io.EOFException
      at
  java.io.DataInputStream.readFully(DataInputStream.java:208)
      at
  com.ibm.mq.headers.internal.DataInputWrapper.readFully(MessageWr
  apper.java:528)
      at
  com.ibm.mq.headers.internal.store.ByteStore.readFrom(ByteStore.j
  ava:499)
      at com.ibm.mq.headers.internal.Header.read(Header.java:1053)
      at
  com.ibm.mq.headers.MQHeaderList.write(MQHeaderList.java:651)
      ......
  
  
  Exception 2:
  ---------------
  Exception: com.ibm.mq.MQException: MQJE001: Completion Code '2',
  Reason '2237'.
  com.ibm.mq.MQException: MQJE001: Completion Code '2', Reason
  '2237'.
  	at
  com.ibm.mq.MQDestination.internalMQPUT(MQDestination.java:1384)
  	at com.ibm.mq.MQDestination.put(MQDestination.java:1234)
  	at com.ibm.mq.MQDestination.put(MQDestination.java:1107)
      ......
  

Problem conclusion

• The IBM MQ classes for Java have been updated to look for any
  null bytes at the end of String parameters (MQCFST) within PCF
  messages, and replace them with spaces. This ensures the length
  of the MQCFST doesn't change, and allows the MQ classes for Java
  to process the MQCFST parameters correctly.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v9.1 CD    TBC.
  
  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

  5724H7271

Applicable component levels