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PI93950: NULLPOINTEREXCEPTION FROM EJSCONTAINER POSTINVOKE() METHOD

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APAR status

  • Closed as program error.

Error description

  • The following NullPointerException error may be thrown by the
    EJSContainer postInvoke() method...
    
    [2/16/18 10:42:07:727 CST] 000000c9 BusinessExcep E
    CNTR0020E: EJB threw an unexpected (non-declared) exception
    during invocation of method "execute" on bean
    "BeanId(TEST_WEB#Test.jar#TestProxySvc, null)". Exception data:
    java.lang.NullPointerException
     at
    com.ibm.ejs.container.EJSContainer.postInvoke(EJSContainer.java:
    4477)
     at com.myTest.EJSLocalTestProxySvc.execute(Test.java)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
    Method)
     at
    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessor
    Impl.java:95)
     at
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethod
    AccessorImpl.java:56)
     at java.lang.reflect.Method.invoke(Method.java:620)
    ...
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server with EJB applications                *
    ****************************************************************
    * PROBLEM DESCRIPTION: NullPointerException from               *
    *                      EJSContainer when using                 *
    *                      UOWManager.runUnderUOW                  *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    The following error may occur when using
    com.ibm.wsspi.uow.UOWManager.runUnderUOW() with EJB bean
    managed transactions:
    [2/16/18 10:42:07:727 CST] 000000c9 BusinessExcep E
    CNTR0020E: EJB threw an unexpected (non-declared) exception
    during invocation of method "execute" on bean
    "BeanId(TEST_WEB#Test.jar#TestProxySvc, null)". Exception data:
    java.lang.NullPointerException
    at
    com.ibm.ejs.container.EJSContainer.postInvoke(EJSContainer.java:
    4477)
    at com.myTest.EJSLocalTestProxySvc.execute(Test.java)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
    Method)
    at
    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessor
    Impl.java:95)
    at
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethod
    AccessorImpl.java:56)
    at java.lang.reflect.Method.invoke(Method.java:620)
    ...
    

Problem conclusion

  • The EJB container bean managed transaction support has never
    been updated to properly support the UOWManager.runUnderUOW()
    method, and the EJB container may lose track of the currently
    active transaction, resulting in a NullPointerException. The
    EJB container has now been updated to properly work with
    UOWManager.runUnderUOW(). The NullPointerException will no
    longer occur.
    
    The fix for this APAR is currently targeted for inclusion in
    fix packs 8.5.5.14 and 9.0.0.8.  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 number

    PI93950

  • Reported component name

    WEBS APP SERV N

  • Reported component ID

    5724H8800

  • Reported release

    850

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2018-02-19

  • Closed date

    2018-03-12

  • Last modified date

    2018-03-12

  • 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

  • R850 PSY

       UP

  • R900 PSY

       UP

[{"Line of Business":{"code":"LOB10","label":"Data and AI"},"Business Unit":{"code":"BU029","label":"Software"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"850"}]

Document Information

Modified date:
17 June 2021