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  • oracle字符集AL16UTF16改为ZHS16GBK

    AL16UTF16一个汉字占3个字节

    ZHS16GBK一个汉字占2个字节

    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
    fixed size                          452044 bytes
    variable size                     109051904 bytes
    database buffers              25165824 bytes
    redo buffers                      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 UTF-8;
    sql> shutdown immediate;
    sql> startup;


    ------------------------
    10g:UTF8 到ZHS16GBK
    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 NATIONAL CHARACTER SET AL16UTF16; 更改国际字符集
    ===========
    ALTER DATABASE CHARACTER SET ZHS16GBK; 更改本地字符集
    或者
    ALTER DATABASE character set INTERNAL_USE ZHS16GBK;
    ===========
    SHUTDOWN IMMEDIATE;
    STARTUP ;

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  • 原文地址:https://www.cnblogs.com/lujing-newer/p/8274227.html
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