IBM Support

IT14620: Channel auth rule type(blockaddr) and warn(yes) on svrconn channel generates AMQ9509 AMQ9214

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APAR status

  • Closed as program error.

Error description

  • An IBM MQ SVRCONN channel fails with the following error when a
    CHLAUTH rule is defined with TYPE(BLOCKADDR) and WARN(YES).
    
    AMQ9509: Program cannot open queue manager object.
    EXPLANATION:
    The attempt to open either the queue or queue manager object
    'XXX' on queue manager 'XXX' failed with reason code 2018.
    
    
    AMQ9214: Attempt to use an unsupported communications protocol.
    EXPLANATION:An attempt was made to use an unsupported
    communications protocol type 0
    
    
    The above error is not reported with a generic ADDRESSMAP and
    BLOCKUSER.
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    Users of the CHLAUTH facility who are using the BLOCKADDR
    CHLAUTH type with WARN set to YES may be affected by this
    problem.
    
    
    Platforms affected:
    MultiPlatform
    
    ****************************************************************
    PROBLEM DESCRIPTION:
    When attempting to write a channel blocked event to the
    SYSTEM.ADMIN.CHANNEL.EVENT queue, IBM MQ first checks whether
    these events are enabled by querying the queue manager object.
     It was possible for BLOCKADDR type authentication to occur
    before the appropriate internal state information had been
    obtained, which caused the MQOPEN of the queue manager object to
    fail with an MQRC_HCONN_ERROR.
    

Problem conclusion

  • The MQ queue manager code has been modified to detect the timing
    condition that lead MQRC_HCONN_ERROR, in order to avoid querying
    internal state information until after the MQOPEN of the queue
    manager object has completed successfully.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
    Version    Maintenance Level
    v7.5       7.5.0.8
    v8.0       8.0.0.6
    v9.0 CD    9.0.1
    v9.0 LTS   9.0.0.1
    
    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

    IT14620

  • 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

    2016-04-13

  • Closed date

    2016-07-28

  • Last modified date

    2017-06-01

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

    PI66546

Fix information

  • Fixed component name

    WMQ BASE MULTIP

  • Fixed component ID

    5724H7241

Applicable component levels

[{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSCPQ63","label":"APAR \/ Maintenance"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"7.5","Edition":"","Line of Business":{"code":"","label":""}}]

Document Information

Modified date:
01 June 2017