- 搜標(biāo)題
- 搜題干
- 搜選項(xiàng)
Consider the following statement：
SQL> EXECUTE DBMS_STATS.GATHER_SHEMA_STATS （-
2> ownname => ‘OE’， -
3> estimate_percent => DBMS_STATS.AUTO_SAMPLE_SIZE， -
4> method opt => ‘for all columns size AUTO’）；
What is the effect of ‘for all columns size AUTO’ of the METHOD_OPT option？（）
A.The Oracle server creates a new histogram based on existing histogram definitions for all table, column, and index statistics for the OE schema.
B.The Oracle server creates a histogram based on data distribution regardless of how the application uses the column/s for all table, column, and index statistics for the OE schema.
C.The Oracle server creates a histogram based on data and application usage of the column/s for all table, column, and index statistics for the OE schema.
D.The Oracle server creates a histogram based on application usage, regardless of data distribution, for all table, column, and index statistics for the OE schema.
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