如何查看及修改oracle编码格式

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--查看oracle数据库字符集:
select userenv('language') from dual;

  查询结果:
 

SIMPLIFIED CHINESE_CHINA.AL32UTF8  --修改oracle数据库字符集:(在SQL Plus中)  sql> conn / as sysdba;  sql> shutdown immediate;  database closed.  database dismounted.   oracle instance shut down.  sql> startup mount;  oracle instance started.  total system global area  135337420 bytes  fixedsize 452044 bytes  variablesize 109051904 bytes  databasebuffers 25165824 bytes  redobuffers 667648 bytes  database mounted.  sql> alter system enable restricted session;  system altered.  sql> alter system set job_queue_processes=0;  system altered.  sql> alter system set aq_tm_processes=0;  system altered.  sql> alter database open;  database altered.  sql> alter database character set internal_use UTF8/ZHS16GBK  sql> shutdown immediate;  sql> startup;
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