IBM Support

IV78767: INCREASE IN MEMORY USAGE BY AMQRMPPA WHEN SSL CONNECTION USES MULTIPLEXED CONVERSATIONS AND REMAINS ACTIVE FOR EXTENDED

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APAR status

  • Closed as program error.

Error description

  • WebSphere MQ amqrmppa process increasing in memory usage.
    
    Trace and diagnostic code indicate an issue when releasing an
    SSL remote issuer buffer when the connection uses multiplexed
    conversations and remains active for extended periods.
    

Local fix

  • Stop and restart the affected channels to release the
    accumulated memory.
    

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    Users of WebSphere MQ using multiplexed channels with SSL
    enabled.
    
    
    Platforms affected:
    MultiPlatform
    
    ****************************************************************
    PROBLEM DESCRIPTION:
    WebSphere MQ allocates a buffer for the SSL Certificate Issuer
    name structure. This structure was not released correctly for
    multiplexed channels.
    

Problem conclusion

  • The WebSphere MQ code has been modified to ensure that the SSL
    Certificate Issue name structure buffer is released when a
    multiplexed conversation terminates.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
    Version    Maintenance Level
    v7.1       7.1.0.8
    v7.5       7.5.0.7
    v8.0       8.0.0.5
    
    The latest available maintenance can be obtained from
    'WebSphere MQ Recommended Fixes'
    http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037
    
    If the maintenance level is not yet available information on
    its planned availability can be found in 'WebSphere MQ
    Planned Maintenance Release Dates'
    http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309
    ---------------------------------------------------------------
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV78767

  • Reported component name

    WMQ LIN X86 V7

  • Reported component ID

    5724H7224

  • Reported release

    710

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2015-11-11

  • Closed date

    2016-01-22

  • Last modified date

    2016-09-06

  • 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

    WMQ LIN X86 V7

  • Fixed component ID

    5724H7224

Applicable component levels

  • R710 PSY

       UP

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Document Information

Modified date:
09 March 2021