IBM Support

IT30974: MQ Appliance queue manager status commands return with UNKNOWN status

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

  • Querying queue manager status from the web console, using REST
    API, or using
    the show qm-status command returns with UNKNOWN for queue
    managers
    in High Availability configuration.
    
    MQ FDCs generated indicate dspmqstatus
    failed with resource issues. One or more FDCs indicating
    pthread_create failing
    with error EAGAIN followed by FDCs from  different MQ components
    (e.g. xehStartAsySignalMonitor) will be generated.
    
     Product Long Name :- IBM MQ Appliance
     Probe Id         :- XC035040
     Component        :- xcsCreateThread
     Program Name     :- dspmqstatus
     Major Errorcode  :- xecF_E_UNEXPECTED_SYSTEM_RC
     Probe Description :- AMQ6119S: An internal IBM MQ Appliance
      error has  occurred ('11 - Resource temporarily unavailable'
    from pthread_create.)
     Arith1           :- 11 (0xb)
     Comment1         :- '11 - Resource temporarily unavailable'
    from pthread_create.
    
     Product Long Name :- IBM MQ Appliance
     Probe Id         :- XC272003
     Component        :- xehStartAsySignalMonitor
     Major Errorcode  :- xecF_E_UNEXPECTED_RC
     Minor Errorcode  :- xecP_E_PROC_LIMIT
     Probe Type       :- MSGAMQ6118
     Probe Severity   :- 1
     Probe Description :- AMQ6118S: An internal IBM MQ Appliance
       error has occurred (20006026)
     Arith1           :- 536895526 (0x20006026)
    
    MQM Function Stack
    xcsInitialize
    InitPrivateServices
    xehStartAsySignalMonitor
    xcsFFST
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    Users running MQ appliance version 9.1.0.3 or 9.1.3 or running
    with the fix for APAR IT27964
    
    
    Platforms affected:
    MultiPlatform
    
    ****************************************************************
    PROBLEM DESCRIPTION:
    Querying the qm status failed because the resource limit set for
    internal MQ process dspmqstatus was insufficient to handle a
    large number of connections.
    
    The precise number of connections will vary with other factors
    such as general workload and specific activity on each
    connection, however under lab testing was found to be
    approximately 1000.
    

Problem conclusion

  • MQ appliance code has been modified to increase the resource
    limit for the dspmqstatus command.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
    Version    Maintenance Level
    v9.1 CD    9.1.5
    v9.1 LTS   9.1.0.4
    
    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

    IT30974

  • Reported component name

    MQ APPLIANCE M2

  • Reported component ID

    5737H4700

  • Reported release

    910

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2019-11-18

  • Closed date

    2019-12-04

  • Last modified date

    2019-12-04

  • 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

    MQ APPLIANCE M2

  • Fixed component ID

    5737H4700

Applicable component levels

[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SS5K6E","label":"IBM MQ Appliance"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"910","Edition":"","Line of Business":{"code":"LOB36","label":"IBM Automation"}}]

Document Information

Modified date:
04 December 2019