oracle误删数据恢复方法小结

 $ sqlplus eygle/eygle
SQL*Plus: Release 10.1.0.2.0 - Production on Wed Mar 30 08:52:04 2005
Copyright (c) 1982, 2004, Oracle.  All rights reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - 64bit Production
With the Partitioning, OLAP and Data Mining options
SQL>select count(*) from t1;
  COUNT(*)
----------
    9318

SQL>delete from t1;
9318 rows deleted.
SQL>commit;
Commit complete.
SQL>select count(*) from t1;
  COUNT(*)
----------
     0

SQL>select dbms_flashback.get_system_change_number from dual;
GET_SYSTEM_CHANGE_NUMBER
------------------------
         10671006
SQL>select count(*) from t1 as of scn 10671000;
  COUNT(*)
----------
     0
SQL>select count(*) from t1 as of scn 10670000;
  COUNT(*)
----------
    9318

SQL>insert into t1 select * from t1 as of scn 10670000;
9318 rows created.
SQL>commit;
Commit complete.
SQL>select count(*) from t1;
  COUNT(*)
----------
    9318

 1. select * from t_viradsl2 t     //查询t_viradsl2中所有的数据，可以看到三条数据
 2. delete t_viradsl2           //删除t_viradsl2中所有的数据，三条数据消失
 3. select * from t_viradsl2 t     //无数据。
 4. insert into t_viradsl2 select * from t_viradsl2 as of timestamp to_Date('2011-01-19 15:28:00', 'yyyy-mm-dd hh24:mi:ss')       //已将误删除数据插入表中
 5. select * from t_viradsl2 t     //又会看到三条数据。