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    DG、ADG、OGG的解析

    以oracle 11G版本为准进行解析 Data Guard Architecture Overview (Data Guard架构概述) Data Guard provides the management, monitoring, and automation software to create and maintain one or more synchronized copies of a production database to protect Oracle data from failures, disasters, human error, and data corruptions while providing high availability for mission critical applications. Data Guard is included with Oracle Database Enterprise Edition. Data Guard提供管理,监视和自动化软件,用于创建和维护生产数据库的一个或多个同步副本,以保护Oracle数据免受故障,灾难,人为错误和数据损坏,同时为关键任务应用程序提供高可用性。 Data Guard包含在Oracle数据库企业版中。 Active Data Guard Functionality Overview (Active Data Guard功能概述) Active Data Guard is an option license for Oracle Database Enterprise Edition. Active Data Guard enables advanced capabilities that that extend basic Data Guard functionality. These include:

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