oracle如何恢复被覆盖的存储过程

如果你不小心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，我们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。下面我们来做一个实验： 1.在用户TEST下14:31下建立存储过程
<div class="codetitle"><a style="CURSOR: pointer" data="70365" class="copybut" id="copybut70365" onclick="doCopy('code70365')"> 代码如下:<div class="codebody" id="code70365">
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
<div class="codetitle"><a style="CURSOR: pointer" data="62079" class="copybut" id="copybut62079" onclick="doCopy('code62079')"> 代码如下:<div class="codebody" id="code62079">
drop procedure GG_TEST;

3.登录到sys账户下
<div class="codetitle"><a style="CURSOR: pointer" data="40053" class="copybut" id="copybut40053" onclick="doCopy('code40053')"> 代码如下:<div class="codebody" id="code40053">
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; 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;

（编辑：李大同）

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