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PI46803: Server with IIOP clients fills heap and throws OutOfMemoryError

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • There is a resource leak in the CosNaming service which can
    use all available memory. Examination of a server heapdump
    will reveal a large number (many thousands) of live objects
    of type
    org.apache.yoko.orb.CosNaming.tnaming2.NamingContextImpl$POA
    Servant$ReadOnly.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server Liberty Profile - JNDI               *
    ****************************************************************
    * PROBLEM DESCRIPTION: Server with IIOP clients fills heap and *
    *                      throws OutOfMemoryError.                *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    There is a resource leak in the CosNaming service which can use
    all available memory. Examination of a server heapdump will
    reveal a large number (many thousands) of live objects of type
    org.apache.yoko.orb.CosNaming.tnaming2.NamingContextImpl$POAServ
    ant$ReadOnly.
    

Problem conclusion

  • The POA servant objects for the CosNaming service naming
    contexts are now created and activated with unique IDs. If a
    servant already exists for a given ID, it is re-used. Multiple
    invocations of the CosNaming service should no longer result in
    heap exhaustion.
    
    The fix for this APAR is currently targeted for inclusion in fix
    pack 8.5.5.7.  Please refer to the Recommended Updates page for
    delivery information:
    http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
    

Temporary fix

  • There is no way to work around this issue other than to restart
    the server repeatedly, which has significant drawbacks.
    

Comments

APAR Information

  • APAR number

    PI46803

  • Reported component name

    WAS LIBERTY COR

  • Reported component ID

    5725L2900

  • Reported release

    855

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2015-08-12

  • Closed date

    2015-08-13

  • Last modified date

    2015-08-13

  • 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

    WAS LIBERTY COR

  • Fixed component ID

    5725L2900

Applicable component levels

  • R855 PSY

       UP

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Document Information

Modified date:
28 April 2022