TRACKMOD option

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TRACMOD
You define a table space using the TRACKMOD NO option. How will DB2 know when a page in the table space has been changed when taking an incremental image copy?
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  • ToddN2000
    According to IBM when creating a tablespace

    TRACKMOD
    Specifies whether Db2 tracks modified pages in the space map pages of the table space or partition.
    YES = Db2 tracks changed pages in the space map pages to improve the performance of incremental image copy.
    NO = Db2 does not track changed pages in the space map pages. It uses the LRSN value in each page to determine whether a page has been changed.
    The value of TRACKMOD for a particular partition is given by the first of these choices that applies:

    1. The TRACKMOD option specified in the PARTITION clause for that partition.
    2. The TRACKMOD value specified in a trackmod-block at the table space level.
    3. The default value specified by the IMPTKMOD subsystem parameter. For more information, see IMPTKMOD in macro DSN6SYSP.
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