1 --退出所有用户的登录。 2 sqlplus / as sysdba; 3 alter system enable restricted session; 4 alter system set JOB_QUEUE_PROCESSES=0; 5 alter system set AQ_TM_PROCESSES=0; 6 7 --重新登录（关闭dos窗口） 8 sqlplus / as sysdba; 9 alter database character set internal_use ZHS16GBK; 10 11 --启用session 12 alter system disable restricted session;