语法：
FLASHBACK TABLE [ schema. ] table [, [ schema. ] table ]...
TO { { { SCN | TIMESTAMP } expr| RESTORE POINT restore_point}
[ { ENABLE | DISABLE } TRIGGERS ]| BEFORE DROP [ RENAME TO table ]} ;
注 flashback table 为 ddl
1.创建测试表T1，并插入数据
SCOTT@lgr> create table t1 (x number(2),d date);
Table created.
SCOTT@lgr> insert into t1 (x) values(1);
1 row created.
SCOTT@lgr> insert into t1 values(2,sysdate);
1 row created.
SCOTT@lgr> commit;
Commit complete.
SCOTT@lgr> select * from t1;
X D
---------- -------------------
1
2 2017-02-19,10:53:41
2.记录当前的时间
SCOTT@lgr> select sysdate from dual;
SYSDATE
-------------------
2017-02-19,10:54:49
3.删除T1表中的一条数据
SCOTT@lgr> delete t1 where x=2;
1 row deleted.
SCOTT@lgr> commit;
Commit complete.
SCOTT@lgr> select * from t1;
X D
---------- -------------------
1
4.此时对表进行闪回，会出现错误。原因很明显，因为表T1没有开启行移动
SCOTT@lgr> flashback table t1 to timestamp to_date('2017-02-19,10:54:49','yyyy-mm-dd,hh24:mi:ss');
flashback table t1 to timestamp to_date('2017-02-19,10:54:49','yyyy-mm-dd,hh24:mi:ss')
*
ERROR at line 1:
ORA-08189: cannot flashback the table because row movement is not enabled
SCOTT@lgr> select table_name,row_movement from user_tables where table_name='T1';
TABLE_NAME ROW_MOVE
------------------------------ --------
T1 DISABLED
5.对表T1开启行移动
SCOTT@lgr> alter table t1 enable row movement;
Table altered.
6.对表T1进行基于时间点的闪回操作
SCOTT@lgr> flashback table t1 to timestamp to_date('2017-02-19,10:54:49','yyyy-mm-dd,hh24:mi:ss');
Flashback complete.
SCOTT@lgr> select * from t1;
X D
---------- -------------------
1
2 2017-02-19,10:53:41