oracle10g的sqlplus查询出中文为问号的解决办法，oracle乱码，oracle修改编码

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 GB2312;
shutdown immediate;
startup;

 

 

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