IBM Support

PI07221: WEBSPHERE MQ 710: MQRC 2195 DURING MQGET WHEN A MESSAGE IS STORED IN SMDS

A fix is available

Subscribe

You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • MQSERIES for z/OS 7.1.0
    
    MQGET is failing with RC 2195 .
    The problem occurs when a message is stored in SMDS and an MQGET
    is issued with a buffer length which is less than the length
    (>90k) of the RFH2 with properties in the message.
    
    CSQIMGES needs to be changed to recognise the
    MQRC_TRUNCATED_MSG_FAILED from CSQMHDRS and to not try and
    locate the rest of the message.
    
    The same problem can happen if the message has properties in a
    large RFH2 (>90K) and no message body.  Size of MQGET buffer is
    not relevant in this case.
    
    *
    Additional Keywords:
    MQRC_TRUNCATED_MSG_FAILED reason 2080
    MQRC_UNEXPECTED_ERROR     reason 2195
    MQSMDS/K
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All users of WebSphere MQ Version 7          *
    *                 Release 1 Modification 0.                    *
    ****************************************************************
    * PROBLEM DESCRIPTION: MQGET returns MQRC_UNEXPECTED_ERROR     *
    *                      (2195) retrieving messages from shared  *
    *                      queues with SMDS.                       *
    *                                                              *
    *                      Abend 5C6-00C9FEEE is issued by         *
    *                      CSQIMGES.                               *
    *                                                              *
    *                      In some cases, the abend does not       *
    *                      happen and the message is retrieved     *
    *                      with a message size larger than         *
    *                      expected and spurious data is appended  *
    *                      at the end of the message.              *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    Abend 5C6-00C9FEEE (CSQI_UNEXPECTED_ERROR) in CSQIMGES is caused
    by MQGET of messages with large headers that have been offloaded
    to SMDS datasets in a shared queue. The problem affects headers
    that are large enough to be stored in two or more SMDS logical
    blocks.
    
    The following cases generate the problem:
    A- MQGET with a buffer length smaller than the size of the
    headers including properties returned in a RFH2.
    
    B- MQGET of messages containing only properties returned in a
    RFH2.
    In the later case, the symptoms of the abend or retrieving
    spurious data depend on how are the headers stored in the SMDS
    dataset.
    

Problem conclusion

  • CSQIMGES has been corrected to properly handle messages with
    large RFH2 headers stored in SMDS datasets.
    100Y
    CSQIMGES
    

Temporary fix

  • *********
    * HIPER *
    *********
    

Comments

APAR Information

  • APAR number

    PI07221

  • Reported component name

    WMQ Z/OS V7

  • Reported component ID

    5655R3600

  • Reported release

    100

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2013-12-03

  • Closed date

    2014-02-24

  • Last modified date

    2014-05-02

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

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

    UI15408

Modules/Macros

  • CSQIMGES
    

Fix information

  • Fixed component name

    WMQ Z/OS V7

  • Fixed component ID

    5655R3600

Applicable component levels

  • R100 PSY UI15408

       UP14/04/08 P F404 Ž

Fix is available

  • Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.

[{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SG19M","label":"APARs - z\/OS environment"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"7.1","Edition":"","Line of Business":{"code":"","label":""}}]

Document Information

Modified date:
02 May 2014