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Adaptive Plans


You can use the V$SQL.IS_RESOLVED_ADAPTIVE_PLAN column to know whether the execution plan associated to a child cursor is adaptive or not. Specifically, to know whether the query optimizer selected either an adaptive join method or an adaptive star transformation (notice that it is not set when the hybrid hash distribution is involved).

The column takes one of the following values:

PeopleSoft and Adaptive Query Optimization in Oracle 12c

Adaptive Query Optimization is a significant feature in Oracle 12c. Oracle has made lots of information available on the subject.(See