当前位置： 移动技术网 > IT编程>数据库>Oracle > 【OCP|052】OCP最新题库解析系列-2

【OCP|052】OCP最新题库解析系列-2

2018年07月07日  | 移动技术网IT编程  | 我要评论

孔汐文,大妈和我在玉米地里操,南京结婚网

2、Which two are true about Optimizer Statistics?


❑ A) They do not persist across Instance restarts.

❑ B) They are automatically updated when DDL statements execute.

❑ C) They are gathered by the Manageability Monitor (MMON) background process.

❑ D) They can be gathered by executing the PL/SQL procedures in the DBMS_STATS package.

❑ E) They can be used to determine the events on which a database instance waited.

❑ F) They provide Information to the Optimizer so that it can determine optimal execution plans for SQL statements.


• Answer:DF

您可能感兴趣的文章:

如对本文有疑问，请在下面进行留言讨论，广大热心网友会与你互动！！ 点击进行留言回复

相关文章:

验证码：
最近更新的文章
大家感兴趣的文章
移动技术网