IT08911: IBM MQ V8.0 RECEIVES EXCEPTION CLASSCASTEXCEPTION WHEN USING THE JMSADMIN COMMAND TO DISPLAY AN MQ QUEUE STORED IN JNDI

APAR status

• Closed as program error.

Error description

• While running the IBM MQ V8.0 JMSAdmin command to display
  queues stored in JNDI, a java.lang.ClassCastException is thrown.
  
  For example:
  ...
  InitCtx> def q(TESTQUEUE) TC(MQ) QMGR(QM1)
  
  InitCtx> dis q(*)
  Q(Q2)
  InitCtx> dis q(Q2)
  Exception in thread "main" java.lang.ClassCastException:
  java.lang.Integer incompatible with java.lang.Byte
   at
  com.ibm.mq.jms.MQDestination.getUnmappableReplacement(MQDestinat
  ion.java:319)
   at
  com.ibm.mq.jms.admin.APUMR.setPropertyFromObject(APUMR.java:175)
   at
  com.ibm.mq.jms.admin.DestBAO.getProperties(DestBAO.java:121)
   at
  com.ibm.mq.jms.admin.QueueBAO.getProperties(QueueBAO.java:156)
   at
  com.ibm.mq.jms.admin.AdminObject.getProperties(AdminObject.java:
  854)
   at
  com.ibm.mq.jms.admin.JMSAdmin.doDisplay(JMSAdmin.java:1381)
   at
  com.ibm.mq.jms.admin.JMSAdmin.execCommand(JMSAdmin.java:451)
   at
  com.ibm.mq.jms.admin.JMSAdmin.commandLoop(JMSAdmin.java:335)
   at com.ibm.mq.jms.admin.JMSAdmin.(JMSAdmin.java:247)
   at com.ibm.mq.jms.admin.JMSAdmin.main(JMSAdmin.java:1863)
  $
  

Local fix

Problem summary

• ****************************************************************
  USERS AFFECTED:
  This issue affects users of the IBM MQ classes for Java Message
  Service (JMS) Administration tool called JMSAdmin who display an
  MQQueue object stored in Java Naming and Directory Interface
  (JNDI) repository.
  
  
  Platforms affected:
  AIX, HP-UX Itanium, HP-UX PA-RISC, HP-UX OpenVMS, IBM iSeries,
  Linux on Power, Linux on S390, Linux on x86, Linux on x86-64,
  Linux on zSeries, Solaris SPARC, Solaris x86-64, Windows
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  IBM MQ classes for Java Message Service (JMS) Administration
  tool JMSAdmin is used to create Java Naming and Directory
  Interface (JNDI) administered objects, such as
  ConnectionFactories, Queues and Topics.
  
  If the JMSAdmin tool was used to display an MQQueue object that
  was stored in the JNDI repository, then a
  java.lang.ClassCastException was thrown while parsing the value
  of the UNMAPPABLEREPLACEMENT property.
  
  ---------------
  InitCtx> DIS Q(Q2)
  
      CCSID(1208)
      DESCRIPTION(Queue created from Queue 'Q2' on Queue Manager
  'QM1' at '26-August-2015 10:35:18')
      ENCODING(NATIVE)
      EXPIRY(APP)
      FAILIFQUIESCE(YES)
      MDMSGCTX(DEFAULT)
      MDREAD(NO)
      MDWRITE(NO)
      MSGBODY(UNSPECIFIED)
      PERSISTENCE(APP)
      PRIORITY(APP)
      PUTASYNCALLOWED(AS_DEST)
      QMANAGER(QM1)
      QUEUE(TESTQUEUE)
      READAHEADALLOWED(AS_DEST)
      READAHEADCLOSEPOLICY(DELIVER_ALL)
      RECEIVECCSID(1208)
      RECEIVECONVERSION(CLIENT_MSG)
      REPLYTOSTYLE(DEFAULT)
      TARGCLIENT(JMS)
      UNMAPPABLEACTION(REPORT)
  Exception in thread "main" java.lang.ClassCastException:
  java.lang.Byte
  incompatible with java.lang.String
          at
  com.ibm.mq.jms.admin.JMSAdmin.doDisplay(JMSAdmin.java:1412)
          at
  com.ibm.mq.jms.admin.JMSAdmin.execCommand(JMSAdmin.java:451)
          at
  com.ibm.mq.jms.admin.JMSAdmin.commandLoop(JMSAdmin.java:335)
          at com.ibm.mq.jms.admin.JMSAdmin.(JMSAdmin.java:247)
          at
  com.ibm.mq.jms.admin.JMSAdmin.main(JMSAdmin.java:1863)
  ---------------
  
  This was caused by incorrectly attempting to cast a
  java.lang.Byte value to a java.lang.String to display to the
  user.
  

Problem conclusion

• The IBM MQ classes for JMS Administration tool JMSAdmin, has
  been updated to remove the casting of property values to
  java.lang.String objects.  The property values for displayed
  Administered objects stored in the Java Naming and Directory
  Interface (JNDI) repository are converted to java.lang.String
  objects without casting, thus, preventing a
  java.lang.ClassCastException from being thrown.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v8.0       8.0.0.3
  
  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

     UP