When a physical standby database is open, redo data from the primary database is received by the standby database, but the log files are not applied.

当物理备库是打开时，来自主库的重做数据被备库接收，但是不会被应用。

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Opening the physical standby database read-only may lengthen the time it takes to recover from a failure or outage, because the database must be restarted after a failover.

以只读方式打开物理备库可以延长失败或中断恢复的时间，因为数据库必须在故障切换后重新启动。

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Opening the physical standby database read-only may lengthen the time it takes to recover from a failure or outage, because the database must be restarted after a failover.

以只读方式打开物理备库可以延长失败或中断恢复的时间，因为数据库必须在故障切换后重新启动。

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