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Oracle® Database Reference
11g Release 1 (11.1)

B28320-03
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OPTIMIZER_DYNAMIC_SAMPLING

Property Description
Parameter type Integer
Default value If OPTIMIZER_FEATURES_ENABLE is set to 10.0.0 or higher, then 2

If OPTIMIZER_FEATURES_ENABLE is set to 9.2.0, then 1

If OPTIMIZER_FEATURES_ENABLE is set to 9.0.1 or lower, then 0

Modifiable ALTER SESSION, ALTER SYSTEM
Range of values 0 to 10

OPTIMIZER_DYNAMIC_SAMPLING controls the level of dynamic sampling performed by the optimizer.

See Also:

Oracle Database Performance Tuning Guide for more information on setting this parameter