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SE67479: MQ: JMSCMQ0001 REASON '2195' ('MQRC_UNEXPECTED_ERROR') ALONG WITH AN FDC WITH PROBE ID AT118004

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APAR status

  • Closed as program error.

Error description

  • A topic/connection factory connection is made for a JMS client
    connection from WebSphere Application Server (WAS) to an MQ
    queue manager.  Errors include:
    
    ConnectionEve W   J2CA0206W: A connection error occurred.  To
    help determine the problem, enable the Diagnose Connection
    Usage option on the Connection Factory or Data Source. This is
    the multithreaded access detection option. Alternatively check
    that the Database or MessageProvider is available.
    
    ConnectionEve A   J2CA0056I: The Connection Manager received a
    fatal connection error from the Resource Adapter for resource
    <connection factory name>.
    
    The exception is: com.ibm.msg.client.jms.DetailedJMSException:
    JMSWMQ0026: Failed to subscribe to topic '<topicname>' using
    MQSUB. There may have been a problem creating the subscription
    due to it being used by another message consumer.
    Make sure any message consumers using this subscription are
    closed before trying to create a new subscription under the
    same name. Please see the linked exception for more
    information.:com.ibm.mq.MQException:
    
    JMSCMQ0001: WebSphere MQ call failed with compcode '2'
    ('MQCC_FAILED') reason '2195' ('MQRC_UNEXPECTED_ERROR').
    
    
    The FDC information includes:
     Probe Id          :- AT118004
     Component         :- atmRegisterSyncExits
     Job Description   :- QMQM/AMQZLAA0
     Submitted By      :- jobnum/QMQM/AMQZXMA0
     Major Errorcode   :- arcE_XAER_PROTO
     Minor Errorcode   :- OK
     Probe Type        :- INCORROUT
     Probe Severity    :- 2
     Probe Description :- AMQ6125: internal MQ error
    
    Corresponding errors in the amqerr01.log are:
    
    - AMQ6125: An internal WebSphere MQ error has occurred.
      EXPLANATION:
      Cause . . . . . :   An internal error has occurred with
      identifier X'20807594'...
    - AMQ6184: An internal WebSphere MQ error has occurred.
    - AMQ6118: An internal WebSphere MQ error has occurred
      (X'20807594')
    
    
    Additional Symptom(s) Search Keyword(s):
    WSAS pubsub publish subscribe
    

Local fix

  • Temporarily set the channel so that it does not used shared
    conversations:
    ALTER CHANNEL(channel_name) CHLTYPE(SVRCONN) SHARECNV(0)
    

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    IBM i users of MQSUB over a channel connection.
    
    
    Platforms affected:
    IBM iSeries
    
    ****************************************************************
    PROBLEM DESCRIPTION:
    The MQSUB call in MQ is transactional in nature and will attempt
    to perform an internal commitment control when called. These
    transactions may sometimes fail when performed over a channel
    connection where multiplexing (Sharing Conversations) is
    enabled.
    

Problem conclusion

  • IBM MQ code has been modified to ensure that internal
    transactions invoked by MQSUB always have a valid transaction
    type.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
    Version    Maintenance Level
    v8.0       8.0.0.8
    v9.0 CD    9.0.4
    v9.0 LTS   9.0.0.2
    
    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

    SE67479

  • Reported component name

    WMQ ISERIES V8.

  • Reported component ID

    5724H7254

  • Reported release

    800

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-06-05

  • Closed date

    2017-06-13

  • Last modified date

    2017-06-13

  • 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 ISERIES V8.

  • Fixed component ID

    5724H7254

Applicable component levels

  • R800 PSY

       UP



Document information

More support for: WebSphere MQ

Software version: 8.0

Reference #: SE67479

Modified date: 13 June 2017


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