ramn恢复
一:users表空间损坏了1:alter tablespace users offline
2:restore tablespace users将要恢复的文件提出出来
3:alter tablespace users online
基于时间的不完全恢复
1:先备份
2:建一个账户create user abc identified by abc
3:grant dba to abc 给abc以dba的权限
createset table abc(id int)
4: 删除abc的账户以及abc账户的表
5:shutdown immediate
6:startup mount
7:run {
setuntil time “ to_date(‘2013—8—23 10:21:30’,‘yyyy-mm-dd hh24:mi:ss’)”;
8:restore database;
9:recover database;
10:alter database open resetlogs;
11:}
undo或者system表损坏
1:shutdown immediate
2:startup mount
3:restore datafile 3
4:recover datafile 3
5: alter database open
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