Oracle Flashback Technologies - 闪回被drop的表

Oracle Flashback Technologies - 闪回被drop的表

在oracle10g中，drop一个表后，表没有真正被删除，支持被rename后放在recyclebin中。

 

#新建一个表y2，用来测试

SQL> create table y2 as select * from all_tables;



Table created.



SQL> select count(*) from y2;



  COUNT(*)

----------

      3598

 

#删除表

SQL> show recyclebin

SQL> drop table y2;



Table dropped.



SQL> show recyclebin

ORIGINAL NAME    RECYCLEBIN NAME                OBJECT TYPE  DROP TIME

---------------- ------------------------------ ------------ -------------------

Y2               BIN$GSUg65H6LKDgU7wMCgqm8g==$0 TABLE        2015-06-23:08:04:05

SQL> select count(*) from y2;

select count(*) from y2

                     *

ERROR at line 1:

ORA-00942: table or view does not exist

 

#闪回被drop的表

SQL> flashback table y2 to before drop;



Flashback complete.



SQL> select count(*) from y2;



  COUNT(*)

----------

      3598



SQL> show recyclebin

SQL>