오라클 캐릭터셋트 변경

select * from nls_database_parameters where parameter = 'NLS_CHARACTERSET';
select * from props$ where name='NLS_CHARACTERSET';

sqlplus '/as sysdba';

shutdown immediate;
startup mount;
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 KO16MSWIN949;
shutdown immediate;
startup