Which statements are true regarding the system-defined moving window baseline in Oracle Database 11g?（）<br>A:It does not allow you to change the moving window size.<br>B:Adaptive threshold functionalities use it by default to compute statistics.<br>C:It is created by default with the window size being equal to the AWR retention time.<br>D:It is created when the first snapshot is collected by the Automatic Workload Repository (AWR).

Which statements are true regarding the system-defined moving window baseline in Oracle Database 11g?（）
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).

出自：Oracle认证

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