PI41076: JMX CLIENT FAILS TO CONNECT WITH CLASSNOTFOUNDEXCEPTION: COM.IBM.WS.MANAGEMENT.PLATFORMMBEANSERVERBUILDER

8.0.0.11: WebSphere Application Server V8.0 Fix Pack 11
8.5.5.7: WebSphere Application Server V8.5.5 Fix Pack 7
8.5.5.8: WebSphere Application Server V8.5.5 Fix Pack 8
8.0.0.12: WebSphere Application Server V8.0 Fix Pack 12
8.5.5.9: WebSphere Application Server V8.5.5 Fix Pack 9
8.5.5.10: WebSphere Application Server V8.5.5 Fix Pack 10
8.5.5.11: WebSphere Application Server V8.5.5 Fix Pack 11
8.0.0.13: WebSphere Application Server V8.0 Fix Pack 13
8.5.5.12: WebSphere Application Server V8.5.5 Fix Pack 12
8.0.0.14: WebSphere Application Server V8.0 Fix Pack 14
8.5.5.13: WebSphere Application Server V8.5.5 Fix Pack 13
8.0.0.15: WebSphere Application Server V8.0 Fix Pack 15
8.5.5.14: WebSphere Application Server V8.5.5 Fix Pack 14
8.5.5.15: WebSphere Application Server V8.5.5 Fix Pack 15
8.5.5.17: WebSphere Application Server V8.5.5 Fix Pack 17
8.5.5.20: WebSphere Application Server V8.5.5.20
8.5.5.18: WebSphere Application Server V8.5.5 Fix Pack 18
8.5.5.19: WebSphere Application Server V8.5.5 Fix Pack 19
8.5.5.16: WebSphere Application Server V8.5.5 Fix Pack 16
8.5.5.21: WebSphere Application Server V8.5.5.21

APAR status

• Closed as program error.

Error description

• When using a JMX client to monitor WebSphere internals,
  an intermittent ClassNotFoundException might occur when
  connecting to the JVM.
  JMX client fails when loading the
  management-agent library
  "getConnectorAddressUsingLoadAgentLibrary".
  The errors seen in the server logs (systemErr.log files)
  
  Exception thrown by the agent :
  javax.management.JMRuntimeException:
  Failed to load MBeanServerBuilder class
  com.ibm.ws.management.PlatformMBeanServerBuilder:
  java.lang.ClassNotFoundException:
  com.ibm.ws.management.PlatformMBeanServerBuilder
  java.lang.reflect.InvocationTargetException
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke
  (NativeMethodAccessor Impl.java:60)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke
  (DelegatingMethod AccessorImpl.java:37)
  at java.lang.reflect.Method.invoke(Method.java:611)
  at sun.instrument.InstrumentationImpl.loadClassAndStartAgent
  (Instru mentationImpl.java:337)
  at sun.instrument.InstrumentationImpl.loadClassAndCallAgentmain
  (Ins trumentationImpl.java:360)
  at com.ibm.tools.attach.javaSE.Attachment.loadAgentLibraryImpl
  (Nati ve Method)
  at com.ibm.tools.attach.javaSE.Attachment.loadAgentLibrary
  (Attachme nt.java:252)
  at com.ibm.tools.attach.javaSE.Attachment.parseLoadAgent
  (Attachment .java:230)
  at com.ibm.tools.attach.javaSE.Attachment.doCommand
  (Attachment.java :140)
  at com.ibm.tools.attach.javaSE.Attachment.run
  (Attachment.java:101)
  Caused by: java.lang.RuntimeException:
  javax.management.JMRuntimeException: Failed to load
  MBeanServerBuilder
  class com.ibm.ws.management.PlatformMBeanServerBuilder:
  java.lang.ClassNotFoundException:
  com.ibm.ws.management.PlatformMBeanServerBuilder
  at sun.management.Agent.error(Agent.java:337)
  at sun.management.Agent.startAgent(Agent.java:173)
  at sun.management.Agent.agentmain(Agent.java:108)
  ... 11 more
  Caused by: javax.management.JMRuntimeException: Failed to load
  MBeanServerBuilder class
  com.ibm.ws.management.PlatformMBeanServerBuilder:
  java.lang.ClassNotFoundException:
  com.ibm.ws.management.PlatformMBeanServerBuilder
  at javax.management.MBeanServerFactory.checkMBeanServerBuilder
  (MBea nServerFactory.java:492)
  at javax.management.MBeanServerFactory.getNewMBeanServerBuilder
  (MBe anServerFactory.java:523)
  at javax.management.MBeanServerFactory.newMBeanServer
  (MBeanServerFa ctory.java:310)
  ... 17 more
  Caused by: java.lang.ClassNotFoundException:
  com.ibm.ws.management.PlatformMBeanServerBuilder
  at java.net.URLClassLoader.findClass(URLClassLoader.java:434)
  at java.lang.ClassLoader.loadClassHelper(ClassLoader.java:703)
  at java.lang.ClassLoader.loadClass(ClassLoader.java:682)
  at sun.misc.Launcher$AppClassLoader.loadClass
  (Launcher.java:358)
  at java.lang.ClassLoader.loadClass(ClassLoader.java:665)
  at javax.management.MBeanServerFactory.loadBuilderClass
  (MBeanServer Factory.java:435)
  at javax.management.MBeanServerFactory.checkMBeanServerBuilder
  (MBea nServerFactory.java:477)
  ... 19 more
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server using monitoring agents that use     *
  *                  JVM "Attach" APIs.                          *
  ****************************************************************
  * PROBLEM DESCRIPTION: An intermittent                         *
  *                      ClassNotFoundException might occur      *
  *                      during attach.                          *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  An intermittent ClassNotFoundException might occur during
  attach.
  

Problem conclusion

• The "missing" class has restricted visibility under OSGI so
  the attach agent cannot load it directly.  Code is adjusted to
  load the class during server startup so it is available for
  attach operations.
  
  The fix for this APAR is currently targeted for inclusion in
  fix packs 8.0.0.11 and 8.5.5.7.  Please refer to the
  Recommended Updatespage for delivery information:
  http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
  

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

  WEBS APP SERV N

• Fixed component ID

  5724H8800

Applicable component levels

• R800 PSY

     UP

• R850 PSY

     UP