利用闪回查看oracle表历史时刻数据

select * from tab_test AS OF TIMESTAMP to_timestamp('20140917 10:00:00','yyyymmdd hh24:mi:ss');

alter table tab_test enable row movement;
flashback table tab_test to timestamp ('20140917 10:00:00','yyyymmdd hh24:mi:ss');
alter table tab_test disable row movement;

select SQL_TEXT,LAST_ACTIVE_TIME from v$sqlarea where LAST_ACTIVE_TIME >to_date('20140917 10:00:00','yyyymmdd hh24:mi:ss') and SQL_TEXT like '%tab_test%';

select log_mode,flashback_on from v$database;