IBM Support

SE68474: MQ V8: WRKMQMCONN crashing the queue manager. FDC with probe ID XY398006

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APAR status

  • Closed as program error.

Error description

  • MQ v8
    wrkmqmconn terminates abnormally with FDC:
    | Probe Id          :- XY398006
    | Component         :- xcsFreeMemBlock
    | Major Errorcode   :- STOP
    | Minor Errorcode   :- OK
    | Probe Type        :- HALT6109
    | Probe Severity    :- 1
    | Probe Description :- AMQ6109: An internal WebSphere MQ error
    has
    occurred.
    | Comment1          :- Failed to match eyecatcher on end memory
    CB
    during     |
    |   free.
    
    when there's an high number of connections to display
    

Local fix

  • Use MQSC command DIS CONN(*) instead
    

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    IBM i users of WRKMQMCONN
    
    
    Platforms affected:
    IBM iSeries
    
    ****************************************************************
    PROBLEM DESCRIPTION:
    When the WRKMQMCONN command is used when there are a large
    number of queue connections in the queue manager, it can result
    in a XY398006 FDC and potential queue manager abend
    

Problem conclusion

  • The code fix via APAR SE67963 introduced a new problem which
    causes the aforementioned failure in WRKMQMCONN. MQ code has
    been updated to resolve this new issue.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
    Version    Maintenance Level
    v8.0       8.0.0.10
    v9.0 LTS   9.0.0.4
    
    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

    SE68474

  • Reported component name

    IBM MQ ISERIES

  • Reported component ID

    5724H7254

  • Reported release

    800

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2018-04-20

  • Closed date

    2018-04-26

  • Last modified date

    2018-05-14

  • 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

    IBM MQ ISERIES

  • Fixed component ID

    5724H7254

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","Edition":"","Line of Business":{"code":"LOB36","label":"IBM Automation"}}]

Document Information

Modified date:
14 May 2018