Oracle Data Guard 以最低的成本实现最好的数据保护 Oracle 白皮书 2004 年 7 月 Oracle Data Guard 以最低的成本实现最好的数据保护 执行概要........................................................................................................................3 灾难的后果....................................................................................................................3 高可用性挑战..........................................................................................................3 Oracle Data Guard ..............................................................................................3 Oracle Data Guard 概述........................................................................................4 什么是 Oracle Data Guard?..........................................................................4 Oracle Data Guard 功能...................................................................................5 Oracle Data Guard 的好处 ..............................................................................6 Oracle Data Guard 进程结构...............................................................................7 主要技术组件...............................................................................................................8 Data Guard 配置...................................................................................................8 重做应用和 SQL 应用..........................................................................................8 物理备用数据库 — 重做应用.....................................................................9 逻辑备用数据库 — SQL 应用...................................................................10 实时应用.................................................................................................................12 数据保护模式........................................................................................................12 ...