oracle利用flashback 闪回功能恢复delete数据

select * from tablename  as of timestamp to_timestamp('2010-06-12 13:00:00','yyyy-mm-dd hh24:mi:ss');

flashback table tablename  to timestamp to_timestamp('2010-06-12 13:00:00','yyyy-mm-dd hh24:mi:ss');

alter table tablename enable row movement;