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IMPTKMOD in macro DSN6SYSP

Specifies whether DB2® is to track modifications to the pages of base table spaces.

The setting is not used for LOB or XML table spaces. Valid values are YES and NO.

The default value, YES, means that DB2 tracks changed pages of base table spaces in the space map pages. This tracking is intended to improve the performance of incremental image copies.

A value of NO means that DB2 does not track changed pages in the space map pages. DB2 uses the LRSN value in each page to determine whether a page has been changed.

If you specify an SAP-specific input member (for example, DSNTIDXB) during installation or migration, the DSNTIJUZ job that is generated by the DB2 CLIST specifies IMPTKMOD=NO.

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