IBM Support

IT20175: Probe Ids XC076010 and C0398008 are produced for clients attached to a queue manager during shutdown

Subscribe to this APAR

By subscribing, you receive periodic emails alerting you to the status of the APAR, along with a link to the fix after it becomes available. You can track this item individually or track all items by product.

Notify me when this APAR changes.

Notify me when an APAR for this component changes.

 

APAR status

  • Closed as program error.

Error description

  • A client application connected to a V8
    distributed  queue manager using SVRCONN
    channels configured with SHARECNV>0,
    can generate FDC files in the client
    side when the queue manager  is shutdown while
    the application is running.
    
    FDC reports error rrcE_PROTOCOL_ERROR,
    probe Id CO398008 and error message
    AMQ9504.  An FDC with Probe Id XC076010
    is also generated.
    

Local fix

  • Workaround is to terminate client application prior to shutting
    down the queue manager
    

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    All users of IBM MQ client applications that use channels with
    SHARECNV > 0 may be affected by this problem.
    
    
    Platforms affected:
    MultiPlatform
    
    ****************************************************************
    PROBLEM DESCRIPTION:
    A logic error within the MQ channel code meant that it was
    possible for a channel process to incorrectly attempt to send a
    notification to a client, after the conversation or connection
    to the client had been terminated, while the queue manager was
    ending. This attempt to communicate over a closed connection
    resulted in the FDC records being generated.
    

Problem conclusion

  • The MQ channel logic has been changed to avoid sending
    notifications
    to a client after the channel conversations have been
    ended.
    
    
    
    
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
    Version    Maintenance Level
    v8.0       8.0.0.12
    v9.1 CD    9.1.2
    
    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

    IT20175

  • Reported component name

    WMQ BASE MULTIP

  • Reported component ID

    5724H7251

  • Reported release

    800

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-04-12

  • Closed date

    2019-01-10

  • Last modified date

    2019-01-10

  • 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 BASE MULTIP

  • Fixed component ID

    5724H7251

Applicable component levels

[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSYHRD","label":"IBM MQ"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"8.0.0.0","Edition":"","Line of Business":{"code":"LOB36","label":"IBM Automation"}}]

Document Information

Modified date:
10 January 2019