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PI62769: DISK OFF-LOAD IS TURNED OFF IF APP INVOKES THE CLEARMEMORY API.

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APAR status

  • Closed as program error.

Error description

  • Disk off-load is turned off if app invokes the clearMemory API.
    
    WebSphere Application Server V 7.0.0.33
    Distributed operating systems
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server using the DistributedMap clearMemory *
    *                  API and the disk offload feature.           *
    ****************************************************************
    * PROBLEM DESCRIPTION: The disk offload feature of a cache     *
    *                      is disabled when the clearMemory API    *
    *                      is invoked.                             *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    The clearMemory API was introduced to clear a cache without
    propagating invalidations to other members of a replication
    domain.  It was intended to be used when the application server
    was stopped.  When an application invokes the clearMemory API
    the disk offload feature is disabled.
    

Problem conclusion

  • A new JVM custom property is being introduced that will
    prevent the disk offload feature from being disabled when the
    DistributedMap clearMemory API is invoked.
    
    From the administrative console navigate to:
    Servers > Server Types > WebSphere application servers >
    server_name, and then, under Server Infrastructure, click Java
    and process management > Process definition > Java virtual
    machine > Custom properties
    
    Create a new custom property named
    com.ibm.ws.cache.CacheConfig.ignoreDiskoffloadSettingOnClearMemo
    ry with a value of true.
    
    The fix for this APAR is currently targeted for inclusion in
    fix packs 7.0.0.43, 8.0.0.13, 8.5.5.11 and 9.0.0.1. 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

    PI62769

  • Reported component name

    WEBS APP SERV N

  • Reported component ID

    5724H8800

  • Reported release

    700

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2016-05-19

  • Closed date

    2016-06-16

  • Last modified date

    2016-06-16

  • 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

  • R900 PSY

       UP



Document information

More support for: WebSphere Application Server
General

Software version: 7.0

Reference #: PI62769

Modified date: 16 June 2016