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  • 如何修改Oracle數據庫字符集

    SELECT DISTINCT (NLS_CHARSET_NAME(CHARSETID)) CHARACTERSET,
                    DECODE(TYPE#,
                           1,
                           DECODE(CHARSETFORM,
                                  1,
                                  'VARCHAR2',
                                  2,
                                  'NVARCHAR2',
                                  'UNKOWN'),
                           9,
                           DECODE(CHARSETFORM,
                                  1,
                                  'VARCHAR',
                                  2,
                                  'NCHAR VARYING',
                                  'UNKOWN'),
                           96,
                           DECODE(CHARSETFORM, 1, 'CHAR', 2, 'NCHAR', 'UNKOWN'),
                           112,
                           DECODE(CHARSETFORM, 1, 'CLOB', 2, 'NCLOB', 'UNKOWN')) TYPES_USED_IN
      FROM SYS.COL$
     WHERE CHARSETFORM IN (1, 2)
       AND TYPE# IN (1, 9, 96, 112);

    修改sys.props$表中的NLS_CHARACTERSET,NLS_NCHAR_CHARACTERSET的值為UTF8。


    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;


    COL VALUE NEW_VALUE CHARSET
    SELECT VALUE FROM NLS_DATABASE_PARAMETERS WHERE PARAMETER='NLS_CHARACTERSET';
    COL VALUE NEW_VALUE NCHARSET
    SELECT VALUE FROM NLS_DATABASE_PARAMETERS WHERE PARAMETER='NLS_NCHAR_CHARACTERSET';

    ALTER DATABASE CHARACTER SET INTERNAL_USE &CHARSET;
    ALTER DATABASE NATIONAL CHARACTER SET INTERNAL_USE &NCHARSET;


    SHUTDOWN IMMEDIATE;
    STARTUP;

    SHUTDOWN IMMEDIATE;
    STARTUP;

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  • 原文地址:https://www.cnblogs.com/jimeper/p/877153.html
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