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PM82054: MSGDSNL030I MAY CONTAIN AN INVALID LUWID VALUE. THE TRANSLATED IP ADDRESS AND PORT DO NOT RESOLVE TO THE ADJACENT CONNECTION.

A fix is available

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APAR status

  • Closed as program error.

Error description

  • DB2DDF DB2DRDA DB2TCPIP defect pm82054 dpm82054
    MSGDSNL030I was issued from DSNLTSEC for an invalid password
    connection error. The LUWID displayed with the message did not
    properly resolve to the gateway address used for the connection.
    The LUWID should translate to the hex value for the IP address
    and port of the adjacent connection. This problem is only seen
    if the connection to DB2/z is made thorugh a gateway.
    DSNL030I
    *************************************************************
    Additional Symptoms and Keywords:
     MSGDSNL030I DSNL030I DSNLTSEC LUWID IP address.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All Distributed Data Facility (DDF) users.   *
    ****************************************************************
    * PROBLEM DESCRIPTION: DSNL030I message from CSECT DSNLTSEC    *
    *                      may not properly identify origin of     *
    *                      the failed request.                     *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    When an error is detected by DB2 CSECT DSNLTSEC, such as an
    authentication error, a DSNL030I message is issued to reflect
    the condition. The LUWID value is intended to refer to the
    adjacent remote system network address related to the failure
    however the LUWID value may actually refer to a network
    address that is not related to the failure. This can impede
    the user's ability to determine the origin of the failure and
    to correct the condition.
    The LUWID value may reflect an unrelated network address when
    the adjacent remote system operates in a gateway environment
    that services work from end users at different network
    addresses.
    When a user is successfully authenticated, at which point the
    end user's LUWID may be known, the LUWID value will now reflect
    the actual end user LUWID and hence its network address. If the
    gateway environment then assigns the connection (to DB2) to a
    different end user that encounters an error, such as a failed
    authentication, the DSNL030I message LUWID value will refer to
    the prior user and hence be misleading.
    

Problem conclusion

  • When the remote system operates in a gateway environment, the
    network address of the actual end user causing the failure
    cannot yet be known because CSECT DSNLTSEC is involved at the
    very early stages of the access to DB2. It would however
    benefit users to always be aware of network address of the
    remote (gateway) system that's directly adjacent to DB2.
    However, with respect to IPv6 considerations, the LUWID value
    cannot fully reflect an IPv6 address of the adjacent partner.
    As a result, the IP address of the adjacent partner will now
    be reflected in the "correlation token" component of the
    DSNLTSEC DSNL030I message THREAD-INFO information.
    Note: The LUWID value may still refer to a prior user and
      its address that may be unrelated to the failure.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PM82054

  • Reported component name

    DB2 OS/390 & Z/

  • Reported component ID

    5740XYR00

  • Reported release

    A10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-02-04

  • Closed date

    2013-05-15

  • Last modified date

    2013-06-04

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

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

    UK94312

Modules/Macros

  • DSNLTSEC
    

Fix information

  • Fixed component name

    DB2 OS/390 & Z/

  • Fixed component ID

    5740XYR00

Applicable component levels

  • RA10 PSY UK94312

       UP13/05/31 P F305

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.



Document information

More support for: DB2 for z/OS

Software version: A10

Reference #: PM82054

Modified date: 04 June 2013


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