PK99216: WAS throws java.lang.ArrayIndexOutOfBoundsException exceptions o n EGL app.

APAR status

• Closed as program error.

Error description

• EGL app randomly throws ArrayIndexOutOfBoundsExceptions at runti
  me.
  
  
  10/16/09 10:18:22:951 EDT] 000000c5 SessionContex E   Exception
  is: java.lang.ArrayIndexOutOfBoundsException: 0
   at com.ibm.javart.arrays.StringArray.writeObject(StringArray.ja
  va:549)
   at sun.reflect.GeneratedMethodAccessor77.invoke(Unknown Source)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe
  thodAccessorImpl.java(Compiled Code))
   at java.lang.reflect.Method.invoke(Method.java(Compiled Code))
   at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClas
  s.java(Compiled Code))
   at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStrea
  m.java(Compiled Code))
   at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputS
  tream.java(Compiled Code))
   at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.j
  ava(Compiled Code))
   at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputSt
  ream.java(Compiled Code))
   at java.io.ObjectOutputStream.defaultWriteObject(ObjectOutputSt
  ream.java(Compiled Code))
   at com.ibm.javart.ref.StringArrayRef.writeObject(StringArrayRef
  .java:227)
   at sun.reflect.GeneratedMethodAccessor76.invoke(Unknown Source)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe
  thodAccessorImpl.java(Compiled Code))
   at java.lang.reflect.Method.invoke(Method.java(Compiled Code))
   at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClas
  s.java(Compiled Code))
   at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStrea
  m.java(Compiled Code))
   at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputS
  tream.java(Compiled Code))
   at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.j
  ava(Compiled Code))
   at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.ja
  va(Inlined Compiled Code))
   at java.util.ArrayList.writeObject(ArrayList.java(Compiled Code
  ))
   at sun.reflect.GeneratedMethodAccessor52.invoke(Unknown Source)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe
  thodAccessorImpl.java(Compiled Code))
   at java.lang.reflect.Method.invoke(Method.java(Compiled Code))
   at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClas
  s.java(Compiled Code))
   at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStrea
  m.java(Compiled Code))
   at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputS
  tream.java(Compiled Code))
   at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.j
  ava(Compiled Code))
   at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.ja
  va(Compiled Code))
   at com.ibm.javart.Container.writeObject(Container.java:606)
   at sun.reflect.GeneratedMethodAccessor55.invoke(Unknown Source)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe
  thodAccessorImpl.java(Compiled Code))
   at java.lang.reflect.Method.invoke(Method.java(Compiled Code))
   at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClas
  s.java(Compiled Code))
   at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStrea
  m.java(Compiled Code))
   at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputS
  tream.java(Compiled Code))
   at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.j
  ava(Compiled Code))
   at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.ja
  va(Inlined Compiled Code))
   at java.util.Hashtable.writeObject(Hashtable.java(Compiled Code
  ))
   at sun.reflect.GeneratedMethodAccessor61.invoke(Unknown Source)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe
  thodAccessorImpl.java(Compiled Code))
   at java.lang.reflect.Method.invoke(Method.java(Compiled Code))
   at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClas
  s.java(Compiled Code))
   at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStrea
  m.java(Compiled Code))
   at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputS
  tream.java(Compiled Code))
   at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.j
  ava(Compiled Code))
   at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.ja
  va(Compiled Code))
   at com.ibm.ws.webcontainer.httpsession.SessionContextMBeanAdapt
  er.getSessionsInfo(SessionContextMBeanAdapter.java(Compiled Code
  ))
   at com.ibm.ws.webcontainer.httpsession.SessionTrackingPMIApplic
  ationData$1.getRuntimeInfo(SessionTrackingPMIApplicationData.jav
  a(Inlined Compiled Code))
   at com.ibm.ws.pmi.server.modules.ServletSessionsModule$SessionO
  bjSize.updateStatistic(ServletSessionsModule.java(Compiled Code)
  )
   at com.ibm.ws.pmi.server.data.SpdStatExternal.updateExternal(Sp
  dStatExternal.java(Compiled Code))
   at com.ibm.websphere.pmi.server.PmiAbstractModule.update(PmiAbs
  tractModule.java(Compiled Code))
   at com.ibm.websphere.pmi.server.PmiAbstractModule.updateStatist
  ics(PmiAbstractModule.java(Compiled Code))
   at com.ibm.ws.pmi.server.ModuleItem.updateStatisticsForStatsTre
  e(ModuleItem.java(Compiled Code))
   at com.ibm.ws.pmi.server.ModuleItem.updateStatisticsForStatsTre
  e(ModuleItem.java(Compiled Code))
   at com.ibm.ws.pmi.server.ModuleItem.getStats(ModuleItem.java(Co
  mpiled Code))
   at com.ibm.ws.pmi.server.PmiRegistry.getStats(PmiRegistry.java(
  Inlined Compiled Code))
   at com.ibm.ws.pmi.server.PmiRegistry.get(PmiRegistry.java(Inlin
  ed Compiled Code))
  

Local fix

Problem summary

• The db connection is Java Runtime is not thread-safe.
  

Problem conclusion

• Using ThreadLocal to ensure the DBConnection thread-safe.
  

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

  RATL BUS DEV

• Fixed component ID

  5724S5000

Applicable component levels

• R700 PSN

     UP