Examine the parameters for your database instance:
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Which three statements are true about the process of automatic optimization by using cardinality feedback? (Choose three.)
- A.The optimizer automatically changes a plan during subsequent execution of a SQL statement if there is a huge difference in optimizer estimates and execution statistics.
- B.The optimizer can re optimize a query only once using cardinality feedback.
- C.The optimizer enables monitoring for cardinality feedback after the first execution of a query.
- D.The optimizer does not monitor cardinality feedback if dynamic sampling and multicolumn statistics are enabled.
- E.After the optimizer identifies a query as a re-optimization candidate, statistics collected by the collectors are submitted to the optimizer.