ITPub博客

首页 > 数据库 > Oracle > Oracle 11G OCP 1Z0-053 298

Oracle 11G OCP 1Z0-053 298

原创 Oracle 作者:LuiseDalian 时间:2014-09-17 08:36:33 0 删除 编辑
(298)While tuning a SQL statement, the SQL Tuning Advisor finds an existing SQL profile for the statement that has stale statistics available.

What would the optimizer do in this situation?

A. It updates the existing SQL profiles with current statistics.

B. It makes the statistics information available to GATHER_STATS_JOB.

C. It initiates the statistics collection process by running GATHER_STATS_JOB.

D. It logs a warning message in the alert log so that the DBA can perform statistics collection manually.


答案:(B)

来自 “ ITPUB博客 ” ,链接:https://blog.itpub.net/17013648/viewspace-1271265/ ,如需转载,请注明出处,否则将追究法律责任。

请登录后发表评论 登录
全部评论

注册时间:2012-02-06

  • 博文量
    1986
  • 访问量
    6040916