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  • 1.  The new Db2 for z/OS DISALLOW_SSARAUTH Subsystem Parameter

    Broadcom Employee
    Posted Feb 24, 2020 04:54 PM

    CA Database Management Solutions for Db2 for z/OS
    and the IBM Db2 for z/OS DISALLOW_SSARAUTH Subsystem Parameter


    IBM PTF UI66853 enables a new online Db2 12 for z/OS subsystem parameter (ZPARM) DISALLOW_SSARAUTH. This ZPARM controls the authorization of allied address spaces that are connecting to Db2. The default setting is NO, which preserves the existing behavior and there is no change required for allied address spaces. When set to YES, Db2 prevents the user address spaces from setting a Db2 address space as a secondary address space. If you plan on setting DISALLOW_SSARAUTH to YES, note the following impact for Version 20.0 and Version 19.0 of the CA Database Management Solutions for DB2 for z/OS:

    • Version 20.0 is compatible with this change. However, you must apply the following maintenance before you change DISALLOW_SSARAUTH to YES:
    SO10442
    SO10906
    SO10907
    SO11323
    SO11983

    • Version 19.0 is not compatible with this setting and there are no plans to provide this support. End of support for Version 19.0 is planned for September 2020. Without the following maintenance the products may fail with the system ABEND 0D7 interruption code 25 or unpredictable results can occur.  After applying the following maintenance, the products will prematurely end with error message: GEN0461E DSNZPARM DISALLOW_SSARAUTH not supported on SSID: ssss
    SO10790
    SO11158
    SO11159
    SO11160

    To continue using the products on this subsystem with DISALLOW_SSARAUTH set to YES, upgrade to Version 20.0 of the CA Database Management Solutions for DB2 for z/OS.


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    Andrew Badgley
    Lead Product Owner
    Broadcom
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  • 2.  RE: The new Db2 for z/OS DISALLOW_SSARAUTH Subsystem Parameter
    Best Answer

    Community Manager
    Posted Feb 25, 2020 12:43 PM
    Thanks for sharing this with the community, Andy!

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    Lenn Thompson
    Community Manager, Mainframe Division
    Broadcom Inc.
    lenn.thompson@broadcom.com
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