052-40

标签：span   ted   select   fonts   end   not   style   锁定   color   

You have statistics collected for some selected tables. Your requirement is that the statistics for the tables
and all dependent indexes must not be overwritten by further statistics collection until a certain point of time.
How would you achieve this?
A. Lock statistics for the tables.
B. Change STALE_PERCENT to zero for the tables.
C. Set the TIMED_STATISTICS parameter to TRUE.
D. Set the STATISTICS_LEVEL parameter to BASIC.
E. Set the OPTIMIZER_USE_PENDING parameter statistics to TRUE.

可以直接锁定统计信息。

052-40

标签：span   ted   select   fonts   end   not   style   锁定   color   

原文地址：http://www.cnblogs.com/Babylon/p/7988028.html