http://jingyan.baidu.com/article/a3aad71aa9bfefb1fa00964d.html
新建变量,设置变量名:NLS_LANG,
变量值:SIMPLIFIED CHINESE_CHINA.ZHS16GBK,
确定即可
进入注册表,依次单击HKEY_LOCAL_MACHINE
--->SOFTWARE ---> ORACLE--->home
(小编安装的是Oracle 11g,这里显示成KEY_OraDb11g_home1),
找到NLS_LANG,查看数值数据是否为:
SIMPLIFIED CHINESE_CHINA.ZHS16GBK