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oracle怎么恢复被覆盖的存储过程

在oracle数据库中,如果覆盖了之前的存储过程,那得赶紧闪回,时长越长闪回的可能性越小。

原理很简单,存储过程的定义就是数据字典,修改数据字典跟修改普通表的数据没有区别,此时会把修改前的内容放到undo中,可以根据这一点来进行闪回,所以我说要尽快,要不然找不回来了。

来做一个实验:

1.在用户TEST下14:31下建立存储过程

create or replace procedure GG_TEST 
as l_cnt number; 
begin 
for i in 1 .. 10000 
loop 
execute immediate select count(*) from t where x =  || i into l_cnt; 
end loop;

end;

2.在用户TEST下在14:33下删除存储过程 

drop procedure GG_TEST;

3.登录到sys账户下 

create table p_temp as 
select * 
from dba_source as of timestamp TO_TIMESTAMP(2014-05-04 14:33:00, YYYY-MM-DD HH24:MI:SS) 
where TYPE = PROCEDURE 
And owner = TEST 
And Name = GG_TEST;

select text 
from p_temp 
where name like upper(%GG_TEST%) 
and owner = TEST

order by line;
--- www.jbxue.com
TEXT 
------------------------------ 
procedure GG_TEST 
as l_cnt number; 
begin 
for i in 1 .. 10000 
loop 
execute immediate select count(*) from t where x =  || i into l_cnt; 
end loop; 
end;