IBM Support

PM73096: Connector installation failing with out of memory error showing archive and class loader instances

Fixes are available

8.5.0.2: WebSphere Application Server V8.5 Fix Pack 2
8.0.0.6: WebSphere Application Server V8.0 Fix Pack 6
7.0.0.29: WebSphere Application Server V7.0 Fix Pack 29
8.0.0.7: WebSphere Application Server V8.0 Fix Pack 7
8.0.0.8: WebSphere Application Server V8.0 Fix Pack 8
7.0.0.31: WebSphere Application Server V7.0 Fix Pack 31
7.0.0.33: WebSphere Application Server V7.0 Fix Pack 33
8.0.0.9: WebSphere Application Server V8.0 Fix Pack 9
7.0.0.35: WebSphere Application Server V7.0 Fix Pack 35
8.0.0.10: WebSphere Application Server V8.0 Fix Pack 10
7.0.0.37: WebSphere Application Server V7.0 Fix Pack 37
8.0.0.11: WebSphere Application Server V8.0 Fix Pack 11
7.0.0.39: WebSphere Application Server V7.0 Fix Pack 39
8.0.0.12: WebSphere Application Server V8.0 Fix Pack 12
7.0.0.41: WebSphere Application Server V7.0 Fix Pack 41
8.0.0.13: WebSphere Application Server V8.0 Fix Pack 13
7.0.0.43: WebSphere Application Server V7.0 Fix Pack 43
8.0.0.14: WebSphere Application Server V8.0 Fix Pack 14
7.0.0.45: WebSphere Application Server V7.0 Fix Pack 45
8.0.0.15: WebSphere Application Server V8.0 Fix Pack 15
7.0.0.29: Java SDK 1.6 SR13 FP2 Cumulative Fix for WebSphere Application Server
7.0.0.45: Java SDK 1.6 SR16 FP60 Cumulative Fix for WebSphere Application Server
7.0.0.31: Java SDK 1.6 SR15 Cumulative Fix for WebSphere Application Server
7.0.0.35: Java SDK 1.6 SR16 FP1 Cumulative Fix for WebSphere Application Server
7.0.0.37: Java SDK 1.6 SR16 FP3 Cumulative Fix for WebSphere Application Server
7.0.0.39: Java SDK 1.6 SR16 FP7 Cumulative Fix for WebSphere Application Server
7.0.0.41: Java SDK 1.6 SR16 FP20 Cumulative Fix for WebSphere Application Server
7.0.0.43: Java SDK 1.6 SR16 FP41 Cumulative Fix for WebSphere Application Server

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APAR status

  • Closed as program error.

Error description

  • Use of the java beans introspector (class
    java.beans.Introspector) on classes loaded by archive file
    dynamic class loaders (for example, WarFileDynamicClassLoader
    and RarFileDynamicClassLoader, both subclasses  of
    ArchiveFileDynamicClassLoader) can cause an OutOfMemory error.
    
    The memory leak occurs because of a static cache of
    introspected classes which is held by the java beans
    introspector.  Because of the use of a  static cache, explicit
    calls to a release API of the introspector must be made to
    avoid memory leaks.
    
    A particular usage of the introspector occurs from code for
    installing Connector modules. For example:
    
    at org/eclipse/jst/j2ee/commonarchivecore/internal/util/
    ArchiveFileDynamicClassLoader.loadClass
    (ArchiveFileDynamicClassLoader.java:400)
    at java/lang/ClassLoader.loadClass(ClassLoader.java:626)
    at java/lang/Class.forNameImpl(Native Method)
    at java/lang/Class.forName(Class.java:172)
    at java/beans/Introspector.loadBeanInfo
    (Introspector.java:371)
    at java/beans/Introspector.getExplicitBeanInfo
    (Introspector.java:305)
    at java/beans/Introspector.getBeanInfoImpl
    (Introspector.java:270)
    at java/beans/Introspector.getBeanInfoImplAndInit
    (Introspector.java:389)
    at java/beans/Introspector.getBeanInfo(Introspector.java:171)
    at com/ibm/ws/management/application/J2CAppUtils
    .getDefinedProperties(J2CAppUtils.java:397)
    at com/ibm/ws/management/component/InstallRAHelper
    .loadBeanPropertyWithType(InstallRAHelper.java:250)
    at com/ibm/ws/management/component/InstallRAHelper
    .loadBeanProperty(InstallRAHelper.java:239)
    

Local fix

  • N/A
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server using the java beans introspector    *
    ****************************************************************
    * PROBLEM DESCRIPTION: Use of the java beans introspector      *
    *                      (class java.beans.Introspector) can     *
    *                      cause an OutOfMemory error.             *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    Use of the java beans introspector
    (class java.beans.Introspector) on classes loaded by archive
    file dynamic class loaders (for example,
    WarFileDynamicClassLoader and RarFileDynamicClassLoader, both
    subclasses of ArchiveFileDynamicClassLoader) can cause an
    OutOfMemory error.
    The memory leak occurs because of a static cache of
    introspected classes which is held by the java beans
    introspector.  Because of the use of a  static cache, explicit
    calls to a release API of the introspector must be made to
    avoid memory leaks.
    A particular usage of the introspector occurs from code for
    installing Connector modules. For example:
    at org/eclipse/jst/j2ee/commonarchivecore/internal/util/
    ArchiveFileDynamicClassLoader.loadClass
    (ArchiveFileDynamicClassLoader.java:400)
    at java/lang/ClassLoader.loadClass(ClassLoader.java:626)
    at java/lang/Class.forNameImpl(Native Method)
    at java/lang/Class.forName(Class.java:172)
    at java/beans/Introspector.loadBeanInfo
    (Introspector.java:371)
    at java/beans/Introspector.getExplicitBeanInfo
    (Introspector.java:305)
    at java/beans/Introspector.getBeanInfoImpl
    (Introspector.java:270)
    at java/beans/Introspector.getBeanInfoImplAndInit
    (Introspector.java:389)
    at java/beans/Introspector.getBeanInfo(Introspector.java:171)
    at com/ibm/ws/management/application/
    J2CAppUtils.getDefinedProperties(J2CAppUtils.java:397)
    at com/ibm/ws/management/component/
    InstallRAHelper.loadBeanPropertyWithType
    (InstallRAHelper.java:250)
    at com/ibm/ws/management/component/
    InstallRAHelper.loadBeanProperty(InstallRAHelper.java:239)
    

Problem conclusion

  • A code update was made to release classes loaded by the
    archive class loader from the java beans introspector cache.
    
    The fix for this APAR is targeted for inclusion in fix packs
    7.0.0.29, 8.0.0.6, and 8.5.0.2.  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

    PM73096

  • Reported component name

    WEBS APP SERV N

  • Reported component ID

    5724H8800

  • Reported release

    700

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-09-17

  • Closed date

    2012-12-26

  • Last modified date

    2012-12-26

  • 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

  • R700 PSY

       UP

  • R800 PSY

       UP

  • R850 PSY

       UP



Document information

More support for: WebSphere Application Server
General

Software version: 7.0

Reference #: PM73096

Modified date: 26 December 2012