IBM Support

PI97290: NULLPOINTEREXCEPTIONS WHILE ENABLING THE CLASSLOADER TRACES.

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APAR status

  • Closed as program error.

Error description

  • After enabling the Classloader traces, customer was getting
    NullPointerExceptions and preventing them to proceed further
    with the trace enablement. The workaround is to disable the
    classlaoder traces.
    
    WebSphere Application Server v8.5
    Distributed os
    

Local fix

  •  NA
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server                                      *
    ****************************************************************
    * PROBLEM DESCRIPTION: An application classloader may throw    *
    *                      a NullPointerException while loading    *
    *                      a class when classloader trace is       *
    *                      enabled.                                *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    After enabling trace groups "com.ibm.ws.classloader.*" or
    "Websphere ClassLoader", an application classloader may throw a
    NullPointerException while loading an application class:
    [4/3/18 11:20:07:119 CDT] 00000070 webapp E
    com.ibm.ws.webcontainer.webapp.WebApp logServletError
    SRVE0293E:
    [Servlet Error]-[portal]: java.lang.NullPointerException
    at
    com.ibm.ws.classloader.CompoundClassLoader$2.run(CompoundClassLo
    ader.java:641)
    at
    com.ibm.ws.classloader.CompoundClassLoader$2.run(CompoundClassLo
    ader.java:629)
    at
    com.ibm.ws.security.util.AccessController.doPrivileged(AccessCon
    troller.java:63)
    at
    com.ibm.ws.classloader.CompoundClassLoader.loadClass(CompoundCla
    ssLoader.java:629)
    at
    java.lang.ClassLoader.loadClass(ClassLoader.java:663)
    at
    com.ibm.wps.state.filter.StateCleanup.doFilter(StateCleanup.java
    )
    at
    com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(Fi
    lterInstanceWrapper.java:195)
    at
    com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebApp
    FilterChain.java:91)
    at
    com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebA
    ppFilterManager.java:964)
    at
    com.ibm.ws.webcontainer.filter.WebAppFilterManager.invokeFilters
    (WebAppFilterManager.java:1104)
    at
    com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:
    3819)
    at
    com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.j
    ava:304)
    

Problem conclusion

  • Apply APAR PI97290 to ensure a WebSphere application
    classloader does not throw a NullPointerException while loading
    a class and classloader trace is enabled.
    
    The fix for this APAR is currently targeted for inclusion in
    fix pack 8.5.5.16 and 9.0.0.12.  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

    PI97290

  • Reported component name

    WEBS APP SERV N

  • Reported component ID

    5724H8800

  • Reported release

    800

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2018-04-26

  • Closed date

    2019-02-11

  • Last modified date

    2019-02-11

  • 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



Document information

More support for: WebSphere Application Server
General

Software version: 8.0

Reference #: PI97290

Modified date: 11 February 2019