1.查询某一时刻的该表的状态
select * from 表名 as of timestamp to_timestamp('2020-10-20 16:47:00', 'yyyy-mm-dd hh24:
2.开启表回退(闪回)
alter table 表名 enable row movement;
3.回退到某一时间点
select * from 表名 as of timestamp to_timestamp('2020-10-20 16:47:00', 'yyyy-mm-dd hh24:mi:ss');
4.关闭表回退(闪回)
alter table 表名 disable row movement;