| 摘要 |
A method for selecting an access plan includes analyzing a plurality of access plans for a particular query and a plurality of low cost access plans for the particular query are identified. Each time a subsequent query, similar to the initial query, is encountered, one of the low cost access plans is executed. In a particular, the low cost access plans may be randomly selected and executed and their execution performance may be monitored to identify an optimal access plan of all the low cost access plans.
|
