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PM72780: APPLICATION START IS SLOWER THAN V6.1 WHEN MANY EJB-REFS ARE PRESENT

Fixes are available

8.5.0.1: WebSphere Application Server V8.5 Fix Pack 1
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

  • Applications with thousands of ejb-ref stanzas in web.xml may
    see significantly slower start times compared to prior
    versions of WebSphere Application Server. There may be no
    other symptoms, and the application will likely perform
    normally once started.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server with EJB 2.1 applications and large  *
    *                  numbers of ejb references defined in        *
    *                  web.xml                                     *
    ****************************************************************
    * PROBLEM DESCRIPTION: Slow server start for applications      *
    *                      with thousands of ejb-ref stanzas in    *
    *                      web.xml                                 *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    Prior to WebSphere Application Server v7.0, the interfaces
    specified on the ejb-ref stanzas in web.xml were not loaded
    until they were first accessed. However, beginning with v7.0,
    in order to support some EJB 3.0 scenarios, these interface
    classes are now processed during application start. When there
    are a very large number of these ejb-ref stanzas in web.xml,
    this may significantly increase the number of class loads
    during application start, and thus may slow down server start.
    

Problem conclusion

  • For EJB 2.x and even many EJB 3.x scenarios that do not
    require these interfaces to be loaded during start, a change
    will be made to defer loading of these interface classes until
    they are first accessed. The behavior for EJB 2.1 applications
    will be the same as it was in v6.1.
    
    The fix for this APAR is currently targeted for inclusion in
    fix packs 7.0.0.27, 8.0.0.6, 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

    PM72780

  • Reported component name

    WEBSPHERE APP S

  • Reported component ID

    5724J0800

  • Reported release

    700

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-09-13

  • Closed date

    2012-09-26

  • Last modified date

    2012-10-04

  • 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

    WEBSPHERE APP S

  • Fixed component ID

    5724J0800

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 #: PM72780

Modified date: 04 October 2012