Oracle-闪回

1.

insert into test
select  *  from test as of timestamp  to_timestamp ('2014-04-11 15:00:00', 'yyyy-MM-dd HH24:mi:SS')

 

下面转自：http://zhidao.baidu.com/link?url=mQSsfnMoA4BFc9B6po9VVrl43jY3mzRUYxqpQGpJ6kSCrl7v9VLTuWiHjlB0t627n54hAVqMDIuNpALvyGBJza

 

/*1.FLASHBACK QUERY*/

--闪回到15分钟前
select *  from orders  as of timestamp (systimestamp - interval ''15'' minute)  where ......
这里可以使用DAY、SECOND、MONTH替换minute，例如：
SELECT * FROM orders AS OF TIMESTAMP(SYSTIMESTAMP - INTERVAL ''2'' DAY)

--闪回到某个时间点
select  *  from orders  as of timestamp  to_timestamp (''01-Sep-04 16:18:57.845993'', ''DD-Mon-RR HH24:MI:SS.FF'') where ...

--闪回到两天前
select * from orders  as of timestamp (sysdate - 2) where.........

/*2.FLASHBACK DROP*/

  1.flashback table orders to before drop;
 
  2.如果源表已经重建，可以使用rename to子句：
  flashback table order to before drop  rename to order_old_version;
 
/*3.FLASHBACK TABLE*/

  1.首先要启用行迁移：
  alter table order enable row movement;
  2.闪回表到15分钟前：
  flashback table order  to timestamp systimestamp - interval ''15'' minute;
    闪回到某个时间点：
  FLASHBACK TABLE order TO TIMESTAMP    TO_TIMESTAMP('2007-09-12 01:15:25 PM','YYYY-MM-DD HH:MI:SS AM')