Linux修改服务器Oracle字符集

Linux安装Oracle时太仓促，没设置好，导入dmp字符集（ZHS16GBK）与服务器字符集（WE8MSWIN1252）对不上，致使导入数据失败：

[oracle@ORACLE ~]$ sqlplus /nolog
SQL> conn /as sysdba;
SQL>select userenv('language') from dual;  --查看服务端字符集
SQL>SHUTDOWN IMMEDIATE  --关闭数据库
SQL>STARTUP MOUNT  --启动到 Mount
SQL>ALTER SYSTEM ENABLE RESTRICTED SESSION;
SQL>ALTER SYSTEM SET JOB_QUEUE_PROCESSES=0;
SQL>ALTER SYSTEM SET AQ_TM_PROCESSES=0;
SQL>ALTER DATABASE OPEN;
SQL>ALTER DATABASE CHARACTER SET INTERNAL_USE ZHS16GBK;
SQL>SHUTDOWN IMMEDIATE;
SQL>STARTUP;
SQL>select userenv('language') from dual;  --查看服务端字符集