1、服务器确认字符集

select * from v$nls_parameters; #是否为zhs16GBK,zhs16utf8.

2、如不是中文字符集需改：关建点

shutdown immediate;

startup mount;

alter database open;

alter system enable restricted session;

alter database national character set internal_use utf8;

alter database character set internal_use AL32GBK;

shutdown immediate;

startup;

3、客户端显示语言及字符集修改

vim /home/oracle/.bash_profile

export LANG=zh_CN.GBK

export NLS_LANG="SIMPLIFIED CHINESE_CHINA".ZHS16GBK  #注意引号,分别是语言_地理.字符集

oracle 的sqlplus会去读取OS中环境变量下的nls_lang信息

确认是：select * from v$nls_parameters;

PARAMETER                      VALUE

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

NLS_LANGUAGE                   SIMPLIFIED CHINESE

NLS_TERRITORY                  CHINA

NLS_CURRENCY                   ￥

NLS_ISO_CURRENCY               CHINA

NLS_NUMERIC_CHARACTERS         .,

NLS_CALENDAR                   GREGORIAN

NLS_DATE_FORMAT                DD-MON-RR

NLS_DATE_LANGUAGE              SIMPLIFIED CHINESE

NLS_CHARACTERSET               ZHS16GBK

NLS_SORT                       BINARY

NLS_TIME_FORMAT                HH.MI.SSXFF AM

4、此时在linux还不能显示中文，那得确认一下服务器本身能不能显示中文文件、目录

通过设置LANG=zh_CN.UTF-8 or LANG=zh_CN.GBK等解决. linux用source .bash_profile命令生效.

WIN系列请在系统高级里同样设：NLS_LANG=SIMPLIFIED CHINESE_CHINA.ZHS16GBK,LANG=zh_CN.UTF-8 or LANG=zh_CN.GBK

5、如还碰到sqlplus中文提示信息乱码

请求调整secureCRT或putty的字符集，如由UTF8调来gb2312.