IBM Support

IT44717: Allow suppression of protocol error caused by v5 Java/JMS clients

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APAR status

  • Closed as program error.

Error description

  • Allow suppression of protocol error caused by v5 Java/JMS

Local fix

  • Update the affected Java applications to use a supported level
    of the MQ classes for Java or MQ classes for JMS

Problem summary

  • ****************************************************************
    Users of current MQ maintenance levels who are using unsupported
    MQ 5.2 or 5.3 Java/JMS client levels
    Platforms affected:
    Additional data length validation checks were added under APAR
    IT42945. Some MQ 5.2 and 5.3 Java clients, which are no longer
    in support, contain a defect which send an invalidly-sized
    transmission to the queue manager when attempting to establish.
    The incorrect size of this transmission is not harmful to the
    queue manager, but is correctly detected as malformed by the new
    validation checks, resulting in the queue manager terminating
    the connection attempt with a protocol error.

Problem conclusion

  • This APAR adds an additional tuning parameter that can be
    provided by IBM support in the event that the use of unsupported
    Java/JMS clients cannot be immediately remediated.
    The tuning parameter suppresses the relevant data length check
    for transmissions that are consistent with the invalid
    transmission sent by the defective 5.2 and 5.3 Java clients.
    The fix is targeted for delivery in the following PTFs:
    Version    Maintenance Level
    v9.0 LTS
    v9.1 LTS
    v9.2 LTS
    v9.3 LTS
    v9.x CD    9.3.5
    The latest available maintenance can be obtained from
    'IBM MQ Recommended Fixes'
    If the maintenance level is not yet available information on
    its planned availability can be found in 'IBM MQ
    Planned Maintenance Release Dates'

Temporary fix




APAR Information

  • APAR number


  • Reported component name

    MQ BASE V9.2

  • Reported component ID


  • Reported release


  • Status


  • PE




  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date


  • Closed date


  • Last modified date


  • 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 BASE V9.2

  • Fixed component ID


Applicable component levels

[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSYHRD","label":"IBM MQ"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"920","Line of Business":{"code":"LOB67","label":"IT Automation \u0026 App Modernization"}}]

Document Information

Modified date:
23 February 2024