273.Which statements are true regarding the system-defined moving window baseline in Oracle Database 11g? (Choose all that apply.)
A. It does not allow you to change the moving window size.
B. Adaptive threshold functionalities use it by default to compute statistics.
C. It is created by default with the window size being equal to the AWR retention time.
D. It is created when the first snapshot is collected by the Automatic Workload Repository (AWR).
Answer: BC
参考：http://docs.oracle.com/cd/E11882_01/server.112/e41573/autostat.htm#PFGRF94179
关于Oracle数据库11g中系统定义的移动窗口基线，哪些说法是正确的？
B、自适应阈值功能默认使用它来计算统计。
C、它被默认创建，窗口大小等于自动负载信息库保留时间。
A. It does not allow you to change the moving window size.
B. Adaptive threshold functionalities use it by default to compute statistics.
C. It is created by default with the window size being equal to the AWR retention time.
D. It is created when the first snapshot is collected by the Automatic Workload Repository (AWR).
Answer: BC
参考：http://docs.oracle.com/cd/E11882_01/server.112/e41573/autostat.htm#PFGRF94179
关于Oracle数据库11g中系统定义的移动窗口基线，哪些说法是正确的？
B、自适应阈值功能默认使用它来计算统计。
C、它被默认创建，窗口大小等于自动负载信息库保留时间。
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/81227/viewspace-2123697/ ，如需转载，请注明出处，否则将追究法律责任。
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