ORACLE数据库字符集

要解决这个问题有两种方法

一个是,利用INTERNAL_USE 关键字修改区域设置,
还有一个是利用re-create,但是re-create有点复杂,所以请用internal_use,

SHUTDOWN IMMEDIATE;
STARTUP MOUNT EXCLUSIVE;
ALTER SYSTEM ENABLE RESTRICTED SESSION;
ALTER SYSTEM SET JOB_QUEUE_PROCESSES=0;
ALTER SYSTEM SET AQ_TM_PROCESSES=0;
ALTER DATABASE OPEN;
ALTER DATABASE NATIONAL CHARACTER SET INTERNAL_USE UTF8;
SHUTDOWN immediate;
startup;