語法：

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  為 ddl

1.建立測試表T1，並插入資料

[email protected]> create table t1 (x number(2),d date);

Table created.

[email protected]> insert into t1 (x) values(1);

1 row created.

[email protected]> insert into t1 values(2,sysdate);

1 row created.

[email protected]> commit;

Commit complete.

[email protected]> select * from t1;

         X D

---------- -------------------

         1

         2 2017-02-19,10:53:41

2.記錄當前的時間

[email protected]> select sysdate from dual;

SYSDATE

-------------------

2017-02-19,10:54:49

3.刪除T1表中的一條資料

[email protected]> delete t1 where x=2;

1 row deleted.

[email protected]> commit;

Commit complete.

[email protected]

         X D

---------- -------------------

         1

4.此時對錶進行閃回，會出現錯誤。原因很明顯，因為表T1沒有開啟行移動

[email protected]> 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

[email protected]> select table_name,row_movement from user_tables where table_name='T1';

TABLE_NAME                     ROW_MOVE

------------------------------ --------

T1                             DISABLED

5.對錶T1開啟行移動

[email protected]> alter table t1 enable row movement;

Table altered.

6.對錶T1進行基於時間點的閃回操作

[email protected]> flashback table t1 to timestamp to_date('2017-02-19,10:54:49','yyyy-mm-dd,hh24:mi:ss');

Flashback complete.

[email protected]> select * from t1;

         X D

---------- -------------------

         1

         2 2017-02-19,10:53:41