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Oracle Bug 4458790 06502: PL/SQL: numeric or value error: character string buffer too small
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作者: atgc(http://atgc.itpub.net)
发表于: 2007.08.30 19:09
分类: 技术文章
出处: http://atgc.itpub.net/post/22412/389787
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发表于: 2007.08.30 19:09
分类: 技术文章
出处: http://atgc.itpub.net/post/22412/389787
---------------------------------------------------------------
Oralce的一些版本，当在函数里执行了min/max操作，并且这个min/MAX的参数是一个char型的字段
将出错，这是一个BUG,BUG号Bug 4458790
我测试了win的9.2.0.7没有问题，但是10.2.0.1由问题
SQL> select * from v$version;
BANNER
----------------------------------------------------------------
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Prod
PL/SQL Release 10.2.0.1.0 - Production
CORE 10.2.0.1.0 Production
TNS for 32-bit Windows: Version 10.2.0.1.0 - Production
NLSRTL Version 10.2.0.1.0 - Production
5 rows selected.
SQL> create table test(name char(5));
Table created.
SQL> insert into test values('a');
1 row created.
SQL> commit;
Commit complete.
SQL> create or replace function myf (p in varchar2) return char
2 is
3 v_1 char;
4 begin
5 select min(name) into v_1 from test;
6 return(v_1);
7 end myf;
8 /
Function created.
SQL> select myf('a') from dual;
select myf('a') from dual
*
ERROR at line 1:
ORA-06502: PL/SQL: numeric or value error: character string buffer too small
ORA-06512: at "A.MYF", line 5
解决方案
将表字段由char为varchar2型
drop table test;
create table test(name varchar2(5));
insert into test values('A');
SQL> select myf('a') from dual;
MYF('A')
---------------------------------
A
1 row selected.
将出错，这是一个BUG,BUG号Bug 4458790
我测试了win的9.2.0.7没有问题，但是10.2.0.1由问题
SQL> select * from v$version;
BANNER
----------------------------------------------------------------
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Prod
PL/SQL Release 10.2.0.1.0 - Production
CORE 10.2.0.1.0 Production
TNS for 32-bit Windows: Version 10.2.0.1.0 - Production
NLSRTL Version 10.2.0.1.0 - Production
5 rows selected.
SQL> create table test(name char(5));
Table created.
SQL> insert into test values('a');
1 row created.
SQL> commit;
Commit complete.
SQL> create or replace function myf (p in varchar2) return char
2 is
3 v_1 char;
4 begin
5 select min(name) into v_1 from test;
6 return(v_1);
7 end myf;
8 /
Function created.
SQL> select myf('a') from dual;
select myf('a') from dual
*
ERROR at line 1:
ORA-06502: PL/SQL: numeric or value error: character string buffer too small
ORA-06512: at "A.MYF", line 5
解决方案
将表字段由char为varchar2型
drop table test;
create table test(name varchar2(5));
insert into test values('A');
SQL> select myf('a') from dual;
MYF('A')
---------------------------------
A
1 row selected.
