PM89050: NULLPOINTEREXCEPTION WHEN INVOKING TASKMANAGEMENT MBEAN OPERATION GETTASKS

8.5.5.1: WebSphere Application Server V8.5.5 Fix Pack 1
8.5.5.2: WebSphere Application Server V8.5.5 Fix Pack 2
8.5.5.3: WebSphere Application Server V8.5.5 Fix Pack 3
8.5.5.4: WebSphere Application Server V8.5.5 Fix Pack 4
8.5.5.5: WebSphere Application Server V8.5.5 Fix Pack 5
8.5.5.6: WebSphere Application Server V8.5.5 Fix Pack 6
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
8.5.5.9: 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
8.5.5.12: WebSphere Application Server V8.5.5 Fix Pack 12
8.5.5.13: WebSphere Application Server V8.5.5 Fix Pack 13
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
8.5.5.14: WebSphere Application Server V8.5.5 Fix Pack 14

APAR status

• Closed as program error.

Error description

• AdminControl.invoke(AdminControl.queryNames("WebSphere:*,type=Ta
  skManagement"),"getTasks()")
  NPE from the above command:
  java.lang.NullPointerException
         at
  com.ibm.ws.taskmanagement.task.impl.TaskTargetObjectImpl.toStrin
  g(TaskTargetObjectImpl.java:144)
         at
  com.ibm.ws.taskmanagement.task.impl.TaskImpl.toString(TaskImpl.j
  ava:346)
         at
  com.ibm.ws.taskmanagement.task.impl.DisplayTaskImpl.toString(Dis
  playTaskImpl.java:156)
         at
  com.ibm.ws.scripting.DefaultStringHandler.formDisplayString(Defa
  ultStringHandler.java:223)
         at
  com.ibm.ws.scripting.AdminControlClient.formDisplayString(AdminC
  ontrolClient.java:1761)
         at
  com.ibm.ws.scripting.AdminControlClient.invoke(AdminControlClien
  t.java:1633)
         at
  com.ibm.ws.scripting.AdminControlClient.invoke(AdminControlClien
  t.java:1434)
         at
  com.ibm.ws.scripting.AdminControlClient.invoke(AdminControlClien
  t.java:1402)
         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
  org.python.core.PyReflectedFunction.__call__(PyReflectedFunction
  .java)
         at org.python.core.PyMethod.__call__(PyMethod.java)
         at org.python.core.PyObject.__call__(PyObject.java)
         at org.python.core.PyInstance.invoke(PyInstance.java)
         at org.python.pycode._pyx61.f$0(<input>:1)
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server Version 8.5.5.0                      *
  ****************************************************************
  * PROBLEM DESCRIPTION: NullPointerException when issuing       *
  *                      wsadmin command below:                  *
  *                      AdminControl.invoke(AdminControl.queryN *
  *                      ames("WebSphere:*,type=TaskManagement") *
  *                      ,"getTasks()")                          *
  ****************************************************************
  * RECOMMENDATION:                                              *
  *                                                              *
  ****************************************************************
  NullPointerException when issuing wsadmin command below:
  AdminControl.invoke(AdminControl.queryNames("WebSphere:*,type=Ta
  skManagement"),"getTasks()")
  

Problem conclusion

• Code is corrected to check for null to avoid
  NullPointerException.
  
  The fix for this APAR is currently targeted for inclusion in
  fix pack 8.5.5.1  Please refer to the Recommended Updates
  page 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

  WEBSPHERE APP S

• Fixed component ID

  5724J0800

Applicable component levels

• R850 PSY

     UP