关于Oracle24.In your database,the STATISTICS_LEVEL initializat

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关于Oracle
24.In your database,the STATISTICS_LEVEL initialization parameter is set to BASIC.What is the impact
of this setting?
A.The optimizer statistics are collected automatically.
B.Only the timed operating system (OS) statistics and plan execution statistics are collected.
C.The Oracle server dynamically generates the necessary statistics on tables as part of query optimization.
D.The snapshots for the Automatic Workload Repository (AWR) are not generated automatically.
E.Snapshots cannot be collected manually by using DBMS_WORKLOAD_REPOSITORY PACKAGE.
能解释下这几个选项么?这个设定跟快照有什么关系?

在你的数据库,STATISTICS_LEVEL初始化参数设置为基础.什么是影响
这个设置吗?
a.优化器所收集的自动统计.
b .只有定时操作系统(OS)统计和计划执行数据采集.
c.圣谕师服务器动态生成之必要的统计数据表查询优化的一部分.
d .的快照的自动工作量仓库(AWR)并不会自动产生.
d.大肠快照不能收集利用DBMS_WORKLOAD_REPOSITORY手动包裹.

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