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Status Functionality already exists
Workspace Db2 for z/OS
Created by Guest
Created on Jun 25, 2020


Based on the recommendations from the recent Best Practices webcast, I believe that DSNACCOX should be enhanced to reflect these recommendations.

Rules to trigger reorgs

For indexes:


Index splits : (REORGLEAFFAR×100)/NACTIVE > 10%

Pseudo-empty pages : NPAGES > 5 AND NPAGES/NLEAF > 10%

For non-LOB table spaces or partitions:


Instead of a more “generic” rule on REORGINSERTS


Deleted rows : REORGDELETES/TOTALROWS > 25% (to control space growth)


Also include objects in advisory-REORG pending or advisory-REBUILD pending(*) which I think is the most important enhancement.

We have built a dynamic reorg strategy around the DSNACCOX recommendations and feel that it should take these items into consideration.

Needed by Date Jan 1, 2021