Oracle数据库编码修改

如何查看及修改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

修改oracle数据库字符集：（在SQL Plus中）
//以管理员身份登录

sql> conn / as sysdba;

//关闭数据库

sql> shutdown immediate;

//database closed.
　　//database dismounted.
//oracle instance shut down.
//以mount打开数据库

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.
//设置session

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.
//启动数据库

sql> alter database open;

//　　database altered.
//修改字符集

　sql> alter database character set internal_use UTF8

//关闭并重启

sql> shutdown immediate;
　　sql> startup;