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PI67140: WMQ V8.0 : SYSTCPD DD STATEMENT TO RESOLVE DNS IS IGNORED

A fix is available

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APAR status

  • Closed as program error.

Error description

  • After upgrade from MQ V7.1 to V8 the SYSTCPD DD Statement to
    resolve DNS in a different TCPIP stack is ignored.
    An LPAR with 2 TCPIP stacks is used. After migration of MQ
    the stack defined in SYSTCPD is no longer be used.
    
    A resolver trace shows that the default TCPIP stack
    /etc/resolve.conf
    is being used, instead the one defined in SYSTCPD.
    

Local fix

  • n/a
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 8 *
    *                 Release 0 Modification 0.                    *
    ****************************************************************
    * PROBLEM DESCRIPTION: The TCP/IP configuration defined in the *
    *                      Channel Initiator's SYSTCPD DD          *
    *                      statement is ignored when               *
    *                      /etc/resolv.conf is defined in HFS or   *
    *                      zFS on the system.                      *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    The internal interface used by MQ for for TCP/IP nameserver
    lookups has changed. This new interface uses a different set of
    precedence rules to locate the TCP/IP configuration. When a
    /etc/resolv.conf configuration is found in HFS or zFS, this is
    used in preference to a Chinit specific SYSTCPD configuration.
    This is different from the order of precedence in version 7 of
    MQ and prevents customers from overriding the TCP/IP
    configuration at a per-Chinit level when a system-wide
    /etc/resolv.conf file exists.
    

Problem conclusion

  • Processing has been amended to ensure that a Chinit-specific
    SYSTCPD DD takes precedence over /etc/resolv.conf. If the
    configuration at /etc/resolv.conf should be used, then the
    Chinit SYSTCPD DD should be removed.
    000Y
    CSQXTENT
    

Temporary fix

Comments

APAR Information

  • APAR number

    PI67140

  • Reported component name

    WMQ Z/OS 8

  • Reported component ID

    5655W9700

  • Reported release

    000

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2016-08-09

  • Closed date

    2016-09-22

  • Last modified date

    2016-11-02

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

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

    PI69442 UI40986

Modules/Macros

  • CSQXTENT
    

Fix information

  • Fixed component name

    WMQ Z/OS 8

  • Fixed component ID

    5655W9700

Applicable component levels

  • R000 PSY UI40986

       UP16/10/06 P F610

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.

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Document Information

Modified date:
02 November 2016