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DOIT
14 年
用Oracle闪回功能恢复偶然丢失的数据
与Oracle 9i中的Flashback Query相似,利用回滚段信息来恢复一个或一些表到以前的一个时间点 (一个快照)。 要注意的是,Flashback Table不等于Flashback Query,Flashback Query仅仅是查询以前的一个快照点而已,并不改变当前表的状态,而Flashback Table将改变当前表及附属对象一起回到以前的时间点。
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