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IC70392: WMQ XMS CLIENT CONNECTION INFORMATION OBJECT MEMORY NOT BEING RELEASED AFTER CONNECTION RELEASED

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APAR status

  • Closed as program error.

Error description

  • For every connection happening from XMS, a connection
    information object was created with Client Channel Definition
    details. This maintains a pointer to a memory location where the
    information about channels are maintained. This memory should
    get released after a successful connection but was not getting
    released. This issue will be more visible only when multiple
    XMS connections are created and closed.
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    WebSphere MQ XMS .NET applications using managed mode to
    connect to a queue manager and repeatedly making connections.
    
    Platforms affected:
    Windows
    
    ****************************************************************
    PROBLEM SUMMARY:
    Whenever a connection is made to a queue manager, native memory
    is allocated to hold the connection information.  This was not
    getting cleaned after each connection.
    

Problem conclusion

  • This problem was causing a memory leak in .NET applications and
    was visible in the native heap of the process. This has been
    resolved by ensuring that native memory allocated for each
    connection is freed after connecting to the queue manager.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
                       v7.0
    Platform           Fix Pack 7.0.1.4
    --------           --------------------
    Windows            U200323
    
    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

    IC70392

  • Reported component name

    WMQ WINDOWS V7

  • Reported component ID

    5724H7220

  • Reported release

    701

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2010-08-04

  • Closed date

    2010-09-15

  • Last modified date

    2010-09-15

  • 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 WINDOWS V7

  • Fixed component ID

    5724H7220

Applicable component levels

  • R701 PSY

       UP

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Document Information

Modified date:
15 September 2010