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- Change Oracle's statistics gathering function to run between 04:00 - 05:00 instead at 22:00
- Oracle assumes to be the only active user during stats gathering
- All the tables, indexes, views need to be created in the same order via scripts
- Switch to RBO (Rule Based Optimizer) for certain views
- Eventual deterministic/stable performance after queries have been tuned
- Need to be careful that we're not joining these non-analyzed tables to analyzed ones
- We may need to switch our OPTIMIZER_MODE setting over to CHOOSE?
- Keep in mind after rebuilding the CM tables there are only 2 tables and 2 queries that run into trouble regularly. We should be careful not to implement DB wide strategies to attack these 2 problems. We need to understand why they differ and see if they can be tuned. (KA)
Activity Log
Thursday
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10-11-2007
- 06:07 (Patrick) Recreated 5 CM tables
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