Oracle查询server字符集+修改字符集

1、查询服务端字符集

select userenv('language') from dual 

select * from v$nls_parameters; 

2、修改字符集

在SQL*PLUS 中，以DBA登录
>conn 用户名 as sysdba

然后执行以下命令
>shutdown immediate; (把database停了)
>startup mount; (把database重开去可更改情況)
>alter system enable restricted session;
>alter system set job_queue_processes=0;
>alter system set aq_tm_processes=0;
>alter database open;
>alter database character set utf8;
OR
>alter database character set internal_use utf8;
>shutdown immediate;
>startup; (重开正常oracle)

VMWare虚拟机Oracle11g测试可行。