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PH40901: NULLPOINTEREXCEPTION DURING JIT EJB STUB GENERATION

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APAR status

  • Closed as program error.

Error description

  • JIT EJB stub generation fails with the following exception:

[9/23/21 11:17:01:988 PDT]     FFDC
Exception:java.lang.NullPointerException
SourceId:com.ibm.ws.ejbcontainer.jitdeploy.JIT_StubPluginImpl.de
fineStubClass ProbeId:95
Reporter:com.ibm.ws.ejbcontainer.jitdeploy.JIT_StubPluginImpl@bf
ee06d
java.lang.NullPointerException
 at java.util.Hashtable.get(Hashtable.java:403)
 at
java.lang.ClassLoader.getClassLoadingLock(ClassLoader.java:1013)
 at
com.ibm.ws.classloader.CompoundClassLoader.defineApplicationClas
s(CompoundClassLoader.java:719)
 at
com.ibm.ws.ejbcontainer.jitdeploy.JIT_StubPluginImpl.defineStubC
lass(JIT_StubPluginImpl.java:276)
 at
com.ibm.ws.classloader.CompoundClassLoader.loadClass(CompoundCla
ssLoader.java:652)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:873)
 at java.lang.Class.forNameImpl(Native Method)
 at java.lang.Class.forName(Class.java:404)
 at
sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:390)
 at
sun.rmi.server.LoaderHandler.loadClass(LoaderHandler.java:198)
 at
java.rmi.server.RMIClassLoader$2.loadClass(RMIClassLoader.java:6
48)
 at
java.rmi.server.RMIClassLoader.loadClass(RMIClassLoader.java:230
)
 at com.ibm.rmi.util.ClassCache$1.run(ClassCache.java:203)
 at
java.security.AccessController.doPrivileged(AccessController.jav
a:682)
 at com.ibm.rmi.util.ClassCache.getClass(ClassCache.java:199)
 at com.ibm.rmi.util.ClassCache.get(ClassCache.java:129)
 at
com.ibm.CORBA.iiop.UtilDelegateImpl.loadClass(UtilDelegateImpl.j
ava:695)
 at javax.rmi.CORBA.Util.loadClass(Util.java:246)
 at com.ibm.rmi.util.Utility.loadClassOfType(Utility.java:857)
 at com.ibm.rmi.util.Utility.loadStubClass2(Utility.java:1552)
 at com.ibm.rmi.util.Utility.access$300(Utility.java:156)
 at
com.ibm.rmi.util.Utility$RepIdToStubClassCache.get(Utility.java:
366)
 at com.ibm.rmi.util.Utility.loadStubClass(Utility.java:1532)
 at
com.ibm.rmi.iiop.DataValueReader.loadStub(DataValueReader.java:1
070)
 at
com.ibm.rmi.iiop.DataValueReader.newObjRef(DataValueReader.java:
963)
 at com.ibm.rmi.iiop.CDRReader.read_Object(CDRReader.java:565)
 at com.ibm.rmi.iiop.CDRReader.read_Object(CDRReader.java:530)
 at
com.ibm.rmi.iiop.EncoderInputStream.read_Object(EncoderInputStre
am.java:816)
 at org.omg.CORBA.ObjectHelper.read(ObjectHelper.java:110)
 at
com.ibm.WsnOptimizedNaming._NamingContextStub.resolve_complete_i
nfo(_NamingContextStub.java:493)
 at
com.ibm.ws.naming.jndicos.CNContextImpl$2.run(CNContextImpl.java
:2959)
 at
com.ibm.ws.naming.jndicos.CNContextImpl$2.run(CNContextImpl.java
:2955)
 at
com.ibm.ws.naming.util.CommonHelpers.retry(CommonHelpers.java:87
1)
 at
com.ibm.ws.naming.jndicos.CNContextImpl.cosResolve(CNContextImpl
.java:2953)
 at
com.ibm.ws.naming.jndicos.CNContextImpl.doLookup(CNContextImpl.j
ava:1819)
 at
com.ibm.ws.naming.jndicos.CNContextImpl.doLookup(CNContextImpl.j
ava:1778)
 at
com.ibm.ws.naming.jndicos.CNContextImpl.lookupExt(CNContextImpl.
java:1435)
 at
com.ibm.ws.naming.jndicos.CNContextImpl.lookup(CNContextImpl.jav
a:617)
 at
com.ibm.ws.naming.util.WsnInitCtx.lookup(WsnInitCtx.java:165)
 at
com.ibm.ws.naming.util.WsnInitCtx.lookup(WsnInitCtx.java:179)
 at javax.naming.InitialContext.lookup(InitialContext.java:428)
 at
org.grnds.facility.factory.GrndsJndiProducer.produce(GrndsJndiPr
oducer.java:120)
...
 at
org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:
293)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessor
Impl.java:90)
 at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethod
AccessorImpl.java:55)
 at java.lang.reflect.Method.invoke(Method.java:508)
 at
org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtil
s.java:106)
 at org.apache.tools.ant.Task.perform(Task.java:348)
 at org.apache.tools.ant.Target.execute(Target.java:435)
 at org.apache.tools.ant.Target.performTasks(Target.java:456)
 at
org.apache.tools.ant.Project.executeSortedTargets(Project.java:1
405)
 at
org.apache.tools.ant.Project.executeTarget(Project.java:1376)
 at
org.apache.tools.ant.helper.DefaultExecutor.executeTargets(Defau
ltExecutor.java:41)
 at
org.apache.tools.ant.Project.executeTargets(Project.java:1260)
 at org.apache.tools.ant.Main.runBuild(Main.java:857)
 at org.apache.tools.ant.Main.startAnt(Main.java:236)
 at org.apache.tools.ant.Main.start(Main.java:199)
 at org.apache.tools.ant.Main.main(Main.java:287)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessor
Impl.java:90)
 at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethod
AccessorImpl.java:55)
 at java.lang.reflect.Method.invoke(Method.java:508)
 at
com.ibm.ws.client.applicationclient.launchClient.createContainer
AndLaunchApp(launchClient.java:869)
 at
com.ibm.ws.client.applicationclient.launchClient.main(launchClie
nt.java:515)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessor
Impl.java:90)
 at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethod
AccessorImpl.java:55)
 at java.lang.reflect.Method.invoke(Method.java:508)
 at
com.ibm.wsspi.bootstrap.WSLauncher.launchMain(WSLauncher.java:23
4)
 at com.ibm.wsspi.bootstrap.WSLauncher.main(WSLauncher.java:101)
 at com.ibm.wsspi.bootstrap.WSLauncher.run(WSLauncher.java:82)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessor
Impl.java:90)
 at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethod
AccessorImpl.java:55)
 at java.lang.reflect.Method.invoke(Method.java:508)
 at
org.eclipse.equinox.internal.app.EclipseAppContainer.callMethodW
ithException(EclipseAppContainer.java:587)
 at
org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseApp
Handle.java:198)
 at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.run
Application(EclipseAppLauncher.java:110)
 at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.sta
rt(EclipseAppLauncher.java:79)
 at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStart
er.java:354)
 at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStart
er.java:181)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessor
Impl.java:90)
 at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethod
AccessorImpl.java:55)
 at java.lang.reflect.Method.invoke(Method.java:508)
 at
org.eclipse.core.launcher.Main.invokeFramework(Main.java:340)
 at org.eclipse.core.launcher.Main.basicRun(Main.java:282)
 at org.eclipse.core.launcher.Main.run(Main.java:981)
 at
com.ibm.wsspi.bootstrap.WSPreLauncher.launchEclipse(WSPreLaunche
r.java:422)
 at
com.ibm.wsspi.bootstrap.WSPreLauncher.main(WSPreLauncher.java:17
9)
 at
com.ibm.websphere.client.applicationclient.launchClient.main(lau
nchClient.java:249)

Local fix

  • Manually run CreateEJBStubs command

Problem summary

  • ****************************************************************
* USERS AFFECTED:  All users of IBM WebSphere Application      *
*                  Server                                      *
****************************************************************
* PROBLEM DESCRIPTION: A NullPointerException occurs during    *
*                      just-in-time EJB stub generation        *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
An issue in the lock mechanism used by the application class
loader can cause a NullPointerException during just-in-time EJB
stub generation. The exception will be logged to FFDC, and the
JIT
stub generation will fail.

Problem conclusion

  • The class loader locking was modified to utilize the appropriate
lock name in all cases.

The fix for this APAR is targeted for inclusion in fix pack
9.0.5.12. For more information, see 'Recommended Updates for
WebSphere Application Server':
https://www.ibm.com/support/pages/node/715553

Temporary fix

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    PH40901
    • 

  • Reported component name
    WEBS APP SERV N
    • 

  • Reported component ID
    5724H8800
    • 

  • Reported release
    900
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt / Xsystem
    • 

  • Submitted date
    2021-09-27
    • 

  • Closed date
    2022-02-07
    • 

  • Last modified date
    2022-02-07
    • 





    

  • 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


    








      
              
                            

              

              [{"Line of Business":{"code":"LOB45","label":"Automation"},"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"9.0"}]
              

                          

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            08 February 2022
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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