The Oracle database determines if this is a physical standby database based on information in the control file.
oracle数据库是以控制文件里的信息是否是物理备库来决定的。
You can alternate between having a physical standby database open for read-only access and performing Redo Apply using the following procedures.
你可以使用以下过程在物理备库只读方式打开访问和执行重做应用来轮流切换。
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。
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。
Section 12.6for a scenario that describes activating a physical standby database as a read/write reporting database, and then resynchronizing the database with the primary database.
第12.6节的场景，描述活动的物理备用数据库为读/写报告数据库，然后与主数据库重新同步数据库。
In this paper attention is concentrated on concept and architecture of Oracle data Guard, and the process of planning, creating physical standby database and logical standby database.
论述了数据库备份的重要性和必要性，介绍了数据库备份的步骤及方法，并通过实例进行了数据库备份、还原操作。
In this paper attention is concentrated on concept and architecture of Oracle data Guard, and the process of planning, creating physical standby database and logical standby database.
论述了数据库备份的重要性和必要性，介绍了数据库备份的步骤及方法，并通过实例进行了数据库备份、还原操作。
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