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。
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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