查看及修改Oracle编码格式方法

--查看Oracle数据库字符集：

select userenv('language') from dual;

查询结果：

SIMPLIFIED CHINESE_CHINA.AL32UTF8

或者

select * from v$nls_parameters;

找到：

NLS_LANGUAGE

NLS_TERRITORY

NLS_CHARACTERSET

环境变量nls_lang便是由这三部分组成

NLS_LANG = language_territory.charset

比如：

NLS_LANG = American_Japan.JA16SJIS

--修改oracle数据库字符集：（在SQL Plus中）

用户名 ： conn 密码： as sysdba

sql> shutdown immediate;

database closed.

database dismounted.

oracle instance shut down.

sql> startup mount;

oracle instance started.

total system global area 135337420 bytes

fixed size 452044 bytes

variable size 109051904 bytes

database buffers 25165824 bytes

redo buffers 667648 bytes

database mounted.

sql> alter system enable restricted session;

system altered.

sql> alter system set job_queue_processes=0;

system altered.

sql> alter system set aq_tm_processes=0;

system altered.

sql> alter database open;

database altered.

sql> alter database character set internal_use JA16SJIS;

sql> shutdown immediate;

sql> startup;