IBM Support

IT25637: MQGET returns MQRC_NO_MSG_AVAILABLE even though there are deliverable messages on the queue

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APAR status

  • Closed as program error.

Error description

  • When issuing MQGET against a queue, MQRC_NO_MSG_AVAILABLE is
    returned to the request, even though there is one or more
    deliverable messages on the queue.
    

Local fix

  • Recycle the queue manager to get the messages to process.
    

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    Customer using MQ 7.5
    
    
    Platforms affected:
    MultiPlatform
    
    ****************************************************************
    PROBLEM DESCRIPTION:
    A logic error in the code which tracked the eligibility of
    messages to be delivered to getters meant that a timing window
    existed where deliverable messages could be overlooked, which
    caused MQRC_NO_MSG_AVAILABLE to be returned to the getter.
    

Problem conclusion

  • The logic error has been corrected.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT25637

  • Reported component name

    WMQ BASE MULTIP

  • Reported component ID

    5724H7241

  • Reported release

    750

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2018-07-10

  • Closed date

    2019-02-28

  • Last modified date

    2019-02-28

  • 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

    5724H7241

Applicable component levels

[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSDEZSF","label":"IBM WebSphere MQ Managed File Transfer for z\/OS"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"7.5","Edition":"","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
31 March 2023