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PH16279: MEMORY LEAK IN WEBFRAGMERGERIMPL DUE TO MULTIPLE START/STOP OF APPLICATION WITHOUT RESTARTING THE APPLICATION SERVER

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APAR status

  • Closed as program error.

Error description

  • Heapdump show leak in WebFragMergerImpl
    
    com.ibm.ws.webcontainer.webapp.WebAppImpl @ 0xd2f51a90
    |- com.ibm.ws.webcontainer.webapp.WebAppConfigurationImpl @
    0xd2ba2900
    | |- com.ibm.ws.webfragmerger.WebFragMergerImpl @ 0xd2d8ea00
    | | |-
    org.eclipse.jst.j2ee.commonarchivecore.internal.impl.WARFragment
    FileImpl @ 0xd2baafe8
    | | |-
    org.eclipse.jst.j2ee.commonarchivecore.internal.impl.WARFragment
    FileImpl @ 0xd2baca28
    

Local fix

  • restart application server
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  IBM WebSphere Application Server version    *
    *                  8.5.5 and 9.0 users of WebContainer         *
    ****************************************************************
    * PROBLEM DESCRIPTION: A memory leak could occur when          *
    *                      repeatedly restarting an application.   *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    Restarting an application repeatedly could cause a memory
    leak.  Example of the memory leak stack:
    com.ibm.ws.webcontainer.webapp.WebAppImpl @ 0xd2f51a90d
    |- com.ibm.ws.webcontainer.webapp.WebAppConfigurationImpl @
    0xd2ba2900
    | |- com.ibm.ws.webfragmerger.WebFragMergerImpl @ 0xd2d8ea00
    | | |-
    org.eclipse.jst.j2ee.commonarchivecore.internal.impl.WARFragment
    FileImpl @ 0xd2baafe8
    | | | |-
    org.eclipse.jst.j2ee.commonarchivecore.internal.helpers.ArchiveM
    anifestImpl @ 0xd4bbcfc0
    | | | | |- java.util.jar.Attributes @ 0xd4bc4ea8
    | | | | | '- java.util.HashMap @ 0xd4cdb5b0
    | | | | |    '- java.util.HashMap$Node[64] @ 0xd50bf288
    

Problem conclusion

Temporary fix

Comments

APAR Information

  • APAR number

    PH16279

  • Reported component name

    WEBS APP SERV N

  • Reported component ID

    5724H8800

  • Reported release

    900

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2019-09-03

  • Closed date

    2019-11-21

  • Last modified date

    2019-11-21

  • 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

[{"Business Unit":{"code":"BU053","label":"Cloud \u0026 Data Platform"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"900","Line of Business":{"code":"LOB36","label":"IBM Automation"}}]

Document Information

Modified date:
14 October 2021