English
全部
搜索
图片
视频
地图
资讯
Copilot
更多
购物
航班
旅游
笔记本
Top stories
Sports
U.S.
Local
World
Science
Technology
Entertainment
Business
More
Politics
时间不限
过去 1 小时
过去 24 小时
过去 7 天
过去 30 天
最佳匹配
最新
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。
当前正在显示可能无法访问的结果。
隐藏无法访问的结果
今日热点
One crew member rescued
Girl hit w/ water bottle, dies
Revokes two green cards
WH seeks to reopen Alcatraz
Troopers rescue bear cub
'Sistas' actress dies at 66
Agrees to 1-yr deal with Bucs
Trump directs to pay workers
E Street Band violinist dies
On Strait of Hormuz
Goo Goo Dolls cancel shows
Second US jet shot down
FDA issues recall
Lloyd staying at Arizona
WGA reaches surprise deal
One dead at Peru rally
Speaks out after car crash
First teen to reach 50 in NBA
Bus crashes in DC
Hikes checked bag fee
Alito treated for dehydration
Spaceballs 2 sets release date
Lively on dismissed case
Southern California wildfire
Pope Leo XIV carries cross
Named AP Player of the Year
GA voting dispute unresolved
Quake hits Afghan, Pakistan
Signs order for college sports
Suffers left hamstring injury
Set to cease operations
反馈