如何恢复一个被误drop的存储过程

来源：互联网发布：java单元测试覆盖率编辑：程序博客网时间：2024/06/05 09:13

原文地址：http://dbsnake.com/2009/03/recover-dropped-procedure.html

今天有同事给我写信："我大概10分钟前错误地drop掉了一个存储过程：P_IPACCHECK_NC，而这个存储过程的源码我本机又没有备份，麻烦您恢复一下，谢谢"

这种恢复是非常容易的，原理就是利用了oracle里所有的存储过程的源代码都是存在dba_source里，而drop某个存储过程的时候，oracle这里肯定要去dba_source里把相关的源代码给delete掉，既然是delete，那就好办咯，直接flashback query就可以了。

如下是完整的恢复过程：

用sys用户登陆，执行如下的查询：

SQL> select text from dba_source as of timestamp to_timestamp('2009-03-06 09:45:00', 'YYYY-MM-DD HH24:MI:SS') where owner='IPRA' and name= 'P_IPACCHECK_NC' order by line;

TEXT

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

procedure P_IPACCHECK_NC(n_flag out number,

vc_message out varchar2) is

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

-- PROCEDURE NAME : P_IPACCHECK_NC --

-- NAME IN SYSMTH : NONE --

-- DESCRIPTION : 对IWBIBT记录进行有效性检查，没有错误的数据置标志为

-- INVOKED : --

-- PROGRAMMED BY : ZhouXin DATE 2008/12/02 --

-- MODIFIED BY :

-- TYPE : ONLINE --

-- --

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

vc_ipastc varchar2(20);

n_errcount number := 0;

begin

for rec_pac in (select * from iwbpac where ipastc is null) loop

TEXT

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

n_errcount := 0;

vc_ipastc := rec_pac.ipastc;

--检查清算月

if rec_pac.ipalrm > to_number(to_char(sysdate, 'YYYYMM')) then

vc_ipastc := vc_ipastc || 'A';

n_errcount := n_errcount + 1;

end if;

--检查名义开账公司

if f_masaln_existawbprefix(rec_pac.ipaarr) != true then

vc_ipastc := vc_ipastc || 'B';

n_errcount := n_errcount + 1;

end if;

--检查实际开账公司

if f_masaln_existawbprefix(rec_pac.ipacar) != true then

vc_ipastc := vc_ipastc || 'C';

n_errcount := n_errcount + 1;

end if;

--检查开账公司

if f_masaln_existawbprefix(rec_pac.ipairl) != true then

vc_ipastc := vc_ipastc || 'E';

n_errcount := n_errcount + 1;

TEXT

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

end if;

--检查名义开账公司

if rec_pac.ipalas <> 'P' then

vc_ipastc := vc_ipastc || 'F';

n_errcount := n_errcount + 1;

end if;

--检查帐单录入日期

if rec_pac.ipanpd > to_number(to_char(sysdate, 'YYYYMMDD')) then

vc_ipastc := vc_ipastc || 'G';

n_errcount := n_errcount + 1;

end if;

--检查开账月

if rec_pac.ipailm > to_number(to_char(sysdate, 'YYYYMM')) then

vc_ipastc := vc_ipastc || 'H';

n_errcount := n_errcount + 1;

end if;

--检查原始开账金额

if rec_pac.ipaemk = 'B' and rec_pac.ipaamt is null then

vc_ipastc := vc_ipastc || 'I';

n_errcount := n_errcount + 1;

end if;

TEXT

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

--检查清算期

if to_number(rec_pac.ipacpr) < 1 or to_number(rec_pac.ipacpr) > 4 then

vc_ipastc := vc_ipastc || 'J';

n_errcount := n_errcount + 1;

end if;

--检查开账期

if to_number(rec_pac.ipabpr) < 1 or to_number(rec_pac.ipabpr) > 4 then

vc_ipastc := vc_ipastc || 'K';

n_errcount := n_errcount + 1;

end if;

--没有错误，置标志位'0'

if n_errcount = 0 then

update iwbpac

set ipastc = '0'

where ipacpr = rec_pac.ipacpr

and ipairl = rec_pac.ipairl

and ipacar = rec_pac.ipacar

and ipanvn = rec_pac.ipanvn

and ipanva = rec_pac.ipanva

and ipalrm = rec_pac.ipalrm;

else

TEXT

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

update iwbpac

set ipastc = vc_ipastc

where ipacpr = rec_pac.ipacpr

and ipairl = rec_pac.ipairl

and ipacar = rec_pac.ipacar

and ipanvn = rec_pac.ipanvn

and ipanva = rec_pac.ipanva

and ipalrm = rec_pac.ipalrm;

end if;

end loop;

exception

when others then

n_flag := 0;

vc_message := substr(sqlerrm, 1, 1000);

end P_IPACCHECK_NC;

100 rows selected

呵呵，剩下该怎样做就不用我说了吧。