Oracel字符集修改

查看字符集
select userenv('language') from dual;

修改字符集

ORACLE11G 字符集更改（这里更改为AL32UTF8）
更改步骤：1、用sysdba角色用户登录sqlplus: 命令行输入：sqlplus sys as sysdba
2、输入口令，进入sqlplus：sql>---
3、依次键入下面的命令行执行：
shutdown immediate;
STARTUP MOUNT;
ALTER SESSION SET SQL_TRACE=TRUE;
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 INTERNAL_USE AL32UTF8;
ALTER SESSION SET SQL_TRACE=FALSE;
shutdown immediate;
startup;