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Best practices for statistics gathering in a small data warehouse

edited Sep 4, 2012 3:39AM in Database Tuning (MOSC) 4 commentsAnswered

Are there any articles available that discuss best practices for gathering statistics for a data warehouse?

We're currently running 10.2.0.5 (11g next year) and our database team as automated statistics gathering with default values, which in my understanding is considering a table 'stale' if the number of rows inserted, updated or deleted is greater than 10% of the table.  This seems inadequate for some of our tables.  When we find reports running poorly we observe tablescans on medium or large tables.  Running dbms_stats.gather_table_stats('owner','tablename') against the table usually results in the query plan changing  to use an index and the report running in seconds vs minutes.

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