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Status Delivered
Workspace Db2
Components Serviceability
Created by Guest
Created on Jun 15, 2020

Improve performance of SET INTEGRITY command through use of (intra partition) parallelism

SET INTEGRITY does currently not make use of intrapartition parallelism.

SET INTEGRITY (with "checked" option) for large tables and/or tables with many foreign key and/or check constraints consumes a large amount of time while the table is not accessable.

We have very large tables (> 10 billion rows) in a non DPF environment with some RI constraints. Especially for one of those big tables it takes about 13-22 hours to complete. As there are further tables having dependencies on it, the whole run for the database takes about 2 days.

Our db server has more than 90 CPU cores. Without parallelism SET INTEGRITY may not use available system ressources effectively.

Needed by Date Aug 1, 2020