oracle更改数据库字符集编码UTF8

首先：

connect sys/orcl as sysdba;

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 utf8;

alter session set sql_trace=false;

shutdown immediate;

startup;