Home Database Mysql Tutorial Oracle客户端出现乱码的解决

Oracle客户端出现乱码的解决

Jun 07, 2016 pm 04:51 PM
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Unix:# 常用unicode字符集export NLS_LANG=american_america.AL32UTF8# 常用中文字符集export NLS_LANG=quot;Simplified Chines

1. NLS_LANG 参数组成
NLS_LANG参数由以下部分组成:
NLS_LANG=_.

NLS_LANG各部分含义如下:
LANGUAGE指定:
-Oracle消息使用的语言
-日期中月份和日显示
TERRITORY指定
-货币和数字格式
-地区和计算星期及日期的习惯
CHARACTERSET:
-控制客户端应用程序使用的字符集
通常设置或者等于客户端(如Windows)代码页
或者对于unicode应用设置为UTF8

在Windows上查看当前系统的代码页可以使用chcp命令:
E:\>chcp
活动的代码页: 936

代码页936也就是中文字符集 GBK,在Microsoft的官方站点上,我们可以遭到关于936代码页的具体编码规则


2. 查看 NLS_LANG 的方法
Windows使用:

echo %NLS_LANG%
如:
E:\>echo %NLS_LANG%
AMERICAN_AMERICA.ZHS16GBK

Unix使用:

env|grep NLS_LANG
如:
/opt/oracle>env|grep NLS_LANG
NLS_LANG=AMERICAN_CHINA.ZHS16GBK

Windows客户端设置,可以在注册表中更改NLS_LANG,具体键值位于:
HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE\HOMExx\
xx指存在多个ORACLE_HOME时系统编号。


3. 查看数据库当前字符集参数设置
SELECT * FROM v$nls_parameters;

select * from nls_database_parameters

select userenv(‘language’) from dual;


4. 查看数据库可用字符集参数设置
SELECT * FROM v$nls_valid_values;


5. 客户端 NLS_LANG 的设置方法
Windows:
# 常用中文字符集
set NLS_LANG=SIMPLIFIED CHINESE_CHINA.ZHS16GBK
# 常用unicode字符集
set NLS_LANG=american_america.AL32UTF8
可以通过修改注册表键值永久设置
HKEY_LOCAL_MACHINE\SOFTWARE\ORACLE\HOMExx\NLS_LANG

Unix:
# 常用unicode字符集
export NLS_LANG=american_america.AL32UTF8
# 常用中文字符集
export NLS_LANG="Simplified Chinese_china".ZHS16GBK
可以编辑 bash_profile 文件进行永久设置
vi .bash_profile
NLS_LANG="Simplified Chinese_china".ZHS16GBK export NLS_LANG
# 使 bash_profile 设置生效
source .bash_profile

linux

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