IBM Support

IT28065: A QUEUE SERVER REPORTS A FDC AND CAN GO DOWN IF IT RECEIVES A MESSAGE WITH GARBAGE CONTENT

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APAR status

  • Closed as program error.

Error description

  • Some unknown application sent a message to the queue server.
    The message had some garbage content.  The queue server
    reported an FDC complaining about IPC problems.  It was then
    rendered inoperable.  A restart of the queue server solved the
    problem.
    

Local fix

  • NA
    

Problem summary

  •  If the Queueserver processes a random message,
    which passed the message check, the Queueserver can become
    unresponsive. That can happen when a process (a customer
    application for instance) accidentally opens the Queueserver
    and sends an application message.
    The garbage message has not been stored in the filesystem.
    A root cause analysis is then no longer possible.
    If the message content were present, this can help to identify
    the application that sent the message.
    

Problem conclusion

  •  The Queueserver creates an FDC and dumps the
    message content if the message check identified a garbage
    message. If a follow up garbage message passes the message check
    and makes the Queuserver unresponsive, there are at least FDCs
    containing formerly received garbage messages. Their content
    enables the user to identify the application which sent the
    garbage message.
    

Temporary fix

  •  There is no workaround for this problem.
    

Comments

APAR Information

  • APAR number

    IT28065

  • Reported component name

    WEBS MQ NSS MIP

  • Reported component ID

    5724A3901

  • Reported release

    531

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2019-02-11

  • Closed date

    2019-07-30

  • Last modified date

    2019-07-30

  • 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

    WEBS MQ NSS MIP

  • Fixed component ID

    5724A3901

Applicable component levels

[{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSCPQ5M","label":"APAR"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"5.3.1","Edition":"","Line of Business":{"code":"","label":""}}]

Document Information

Modified date:
30 July 2019