PM78648: CLASSLOADER CONTENTION ON EXPRESSIONFACTORYIMPL OBJECTS

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • A class loader lock contention in creating
    ExpressionFactoryImpl objects causes performance to degrade
    under load.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  IBM WebSphere Application Server Version    *
    *                  8.0 and 8.5 users of the Expression         *
    *                  Language (EL).                              *
    ****************************************************************
    * PROBLEM DESCRIPTION: A performance degradation can occur     *
    *                      under heavy load for applications       *
    *                      using the EL.                           *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    A class loader lock contention can occur on the EL class
    org.apache.el.ExpressionFactoryImpl during heavy load.
    Applications using EL expressions under heavy load will result
    in the creation of many ExpressionFactoryImpl objects and lead
    to the lock contention.
    

Problem conclusion

Temporary fix

Comments

APAR Information

  • APAR number

    PM78648

  • Reported component name

    WEBSPHERE APP S

  • Reported component ID

    5724J0800

  • Reported release

    800

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-12-06

  • Closed date

    2013-01-14

  • Last modified date

    2013-03-20

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

    PI25445

Fix information

  • Fixed component name

    WEBSPHERE APP S

  • Fixed component ID

    5724J0800

Applicable component levels

  • R800 PSY

       UP

  • R850 PSY

       UP



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Document information


More support for:

WebSphere Application Server
General

Software version:

8.0

Reference #:

PM78648

Modified date:

2013-03-20

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