使用SCN进行恢复查询当天SCNSQL> select dbms_flashback.get_system_change_number from dual;查询当前SCN前面的表信息SQL> select count(*) from test as of scn 10010078;之后就是把那时查到的表备份到一个新表,使用新表替换旧表SQL> create table test1 as select * from test as of scn 10010078;