Modify the oralce11g character set to zhs16gbk

SQL> conn sys/sys as sysdba;
SQL> shutdown immediate;
SQL> startup Mount;
SQL> alter session set SQL _trace = true;
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 zhs16gbk;

SQL> shutdown immediate;
SQL> startup; Character Set Change of Oracle Database

SQL> alter database character set zhs16gbk; next job failure

Simplified chinese_china.zhs16gbk

Alter database character set internal_use zhs16gbk;