Oracle Flashback基础应用

查看用户是否具有Flashback权限
 select * from session_privs where privilege like 'FLASHBACK%';
 
授予用户Flashback权限
 grant flashback any table to test;
 
恢复刚才删除的一条数据
 alter database add supplemental log data;
 delete from dept where dname='IT';
 commit;
 select * from dept where dname='IT';
 
查看操作,并使用undo_sql恢复
 select t.start_timestamp,t.commit_timestamp,t.logon_user,t.operation,t.table_name,t.table_owner,t.undo_sql from flashback_transaction_query t where table_name='DEPT';
 

基于时间段恢复
 update dept set dname='china';
 select * from dept;
 commit;
 
开启对应表的行移动,并使用基于时间段的闪回(10分钟)
 alter table dept enable row movement;
 flashback table dept to timestamp to_timestamp(sysdate-10/(24*60));
 
恢复删除的表
 drop table dept;
 flashback table dept to before drop;
 
查看回收站
 select * from user_recyclebin order by droptime desc;

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