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SQL> sqlplus sys/sys as sysdba;
……
SQL> shutdown immediate;
SQL> startup 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 AL32UTF8;(ZHS16GBK)
SQL> shutdown immediate;
SQL> startup;
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