快照监控器允许您捕获特定时间内数据库活动的状态，而事件监控器只在特定数据库事件发生时记录数据。
The snapshot monitor enables you to capture a picture of the state of the database activity at a specific moment in time, while event monitors log data only as specified database events occur.
清单2中的线程2用于在整个时间段内拍摄多个快照，在初始复位监控器命令之后没有发出复位监控器命令。
Thread 2 in Listing 2 is for taking multiple snapshots over the period without issuing the reset monitor command after the initial reset monitor command.
监控器数据收集应该包含一个时间框架，您期望在这段时间内发生普通数据库活动(例如，每个工作日的9 a . m .到5 p. m.)。
Your collection of monitor data should cover a time frame in which you would expect normal database activity (for example, between 9 a.m. and 5 p.m. during a workday).
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