Before you can use the event monitors after you first create them, you either have to deactivate and activate the database or manually start the event monitors, as shown in Listing 15.

在使用首次创建的事件监控器之前，您必须首先禁用数据库然后再激活它，或手动运行事件监控器，如清单15所示。

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(Power outages, however, activate backup battery and safe mode, which means you can still perform tasks like unlocking a door manually).

(比如停电了。但是还有启动备用电池和安全模式的存在，这样你就可以继续你手上的活计了)。

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If the volume group is concurrent capable, you will be prompted by the importvg command to activate the imported volume group manually using varyonvg.

如果卷组可以并发，那么importvg命令会提示您使用varyonvg命令来手动激活导入的卷组。

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There's a simple backlight that illuminates the panel briefly at night, automatically when you receive a notification or manually when you activate any of the four side-mounted buttons.

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