Oracle恢复误删或误改的数据

1. 查询某个时间段的历史数据

select * from PROJECT as of timestamp (systimestamp - interval '30' minute);

select * from PROJECT as of timestamp sysdate - 20/1440;

2. 然后执行inert操作

insert into project
      select * from PROJECT as of timestamp (systimestamp - interval '35' minute);