为了解决现有的数据库备份方案相关性太强导致的建设困难、维护困难和升级困难的问题,提出并实现了一种基于Oracle数据库的容灾系统.该系统可以进行远程备份与恢复,采用与源结构无关的备份存储技术和零窗口备份技术,在有效地保证用户数据安全性的同时,使得备份可以在应用程序保持在线的任何时刻进行,解决了传统容灾系统无法7*24小时运行的瓶颈.该容灾系统对系统资源占用率很低,有效地减少用户使用时所遇到的一些不必要问题.%To resolve the problem of the difficulty of the maintenance and upgrade on current database backup system which is leaded by the excessive relevance, an oracle-database-based backup system is presented and implemented. The technology of remote backup, recovery and source-structure-independent backup, storage and backup without window are realized in this system, the user data is guaranteed effectively, besides backup could be kept going all the time when the application is online, the traditional problem of tolerant system is that it couldn' t run 7*24 hours all week is also resolved. Resources are cost greatly less than ever, and some unnecessary problems users may encounter are effectively reduced.
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