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PI24774: WHEN DCNS ARE ENABLED AND DWA IS SETUP, SAVING MULTIPLE MODULE CHANGES CAN BE VERY TIME CONSUMING

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APAR status

  • Closed as program error.

Error description

  • When a database has DCNs enabled, and DWA is running, the
    performance when saving multiple changes in a module decreases
    drastically.
    
    The scale of the degradation depends on exactly what change you
    are making, and how the system is setup (e.g. ping time between
    client and server). When modifying 10,000 objects, the save time
    increased from ~5s to ~80s when saving with DCNs enabled.
    
    To recreate:
    
     - setup and start DWA, including enabling DCNs
     - open a module, make changes to as many objects as possible
     - save the module
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * Users of DOORS Web Access                                    *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * When a database has DCNs enabled, and DWA is running, the    *
    * performance when saving multiple changes in a module         *
    * decreases                                                    *
    * drastically.                                                 *
    *                                                              *
    * The scale of the degradation depends on exactly what change  *
    * you                                                          *
    * are making, and how the system is setup (e.g. ping time      *
    * between                                                      *
    * client and server). When modifying 10,000 objects, the save  *
    * time                                                         *
    * increased from ~5s to ~80s when saving with DCNs enabled.    *
    *                                                              *
    * To recreate:                                                 *
    *                                                              *
    *  - setup and start DWA, including enabling DCNs              *
    *  - open a module, make changes to as many objects as         *
    * possible                                                     *
    *  - save the module                                           *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    This is a client side fix
    

Problem conclusion

  • The code has been changed so that performance has been improved
    for the scenario where more than 100 edits have taken place in
    the session preceding the save. For scenarios where the number
    of edits is below 100 in a session, the behaviour is unchanged.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PI24774

  • Reported component name

    TLOGIC DOORS WE

  • Reported component ID

    5724V97WA

  • Reported release

    960

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2014-08-28

  • Closed date

    2014-12-05

  • Last modified date

    2014-12-05

  • 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

    TLOGIC DOORS WE

  • Fixed component ID

    5724V97WA

Applicable component levels

  • R960 PSY

       UP



Document information

More support for: Rational DOORS

Software version: 9.6

Reference #: PI24774

Modified date: 05 December 2014