ALTER DATABASE character set INTERNAL_USE ZHS16GBK; 

 ALTER DATABASE CHARACTER SET ZHS16GBK; 

oracle修改字符编码    1

1    打开命令窗口    2

2    查看当前字符编码    3

3    执行命令    4

oracle修改字符编码

1. 打开命令窗口

sqlplus shybt/shybt@localhost:1521/orcl

1. 查看当前字符编码

   1. select userenv(‘language‘) from dual;

1. 执行命令

1. shutdown immediate;

1. startup mount
2. ALTER SYSTEM ENABLE RESTRICTED SESSION;
3. ALTER SYSTEM SET JOB_QUEUE_PROCESSES=0;

1. ALTER SYSTEM SET JOB_QUEUE_PROCESSES=0;

1. ALTER SYSTEM SET AQ_TM_PROCESSES=0;
2. alter database open;

1. ALTER DATABASE character set INTERNAL_USE AL32UTF8;
2. shutdown immediate
3. startup

执行成功

oracle修改字符编码

原文：http://www.cnblogs.com/rhxuza1993/p/7508201.html