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  • 修改oracle数据库字符集的方法

    SQL> select name,value$ from props$ where name like '%NLS%';

    NAME
    ------------------------------
    VALUE$
    -----------------------------------------------------------------------

    NLS_LANGUAGE
    AMERICAN

    NLS_TERRITORY
    AMERICA

    NLS_CURRENCY
    $


    NAME
    ------------------------------
    VALUE$
    -----------------------------------------------------------------------

    NLS_ISO_CURRENCY
    AMERICA

    NLS_NUMERIC_CHARACTERS
    .,

    NLS_CHARACTERSET
    WE8ISO8859P1


    NAME
    ------------------------------
    VALUE$
    -----------------------------------------------------------------------

    NLS_CALENDAR
    GREGORIAN

    NLS_DATE_FORMAT
    DD-MON-RR

    NLS_DATE_LANGUAGE
    AMERICAN


    NAME
    ------------------------------
    VALUE$
    -----------------------------------------------------------------------

    NLS_SORT
    BINARY

    NLS_TIME_FORMAT
    HH.MI.SSXFF AM

    NLS_TIMESTAMP_FORMAT
    DD-MON-RR HH.MI.SSXFF AM


    NAME
    ------------------------------
    VALUE$
    -----------------------------------------------------------------------

    NLS_TIME_TZ_FORMAT
    HH.MI.SSXFF AM TZR

    NLS_TIMESTAMP_TZ_FORMAT
    DD-MON-RR HH.MI.SSXFF AM TZR

    NLS_DUAL_CURRENCY
    $


    NAME
    ------------------------------
    VALUE$
    -----------------------------------------------------------------------

    NLS_COMP
    BINARY

    NLS_LENGTH_SEMANTICS
    BYTE

    NLS_NCHAR_CONV_EXCP
    FALSE


    NAME
    ------------------------------
    VALUE$
    -----------------------------------------------------------------------

    NLS_NCHAR_CHARACTERSET
    AL16UTF16

    NLS_RDBMS_VERSION
    10.2.0.3.0


    20 rows selected.



    SQL> shutdown immediate;
    Database closed.
    Database dismounted.
    ORACLE instance shut down.


    SQL> startup mount
    ORACLE instance started.

    Total System Global Area 235999352 bytes
    Fixed Size 450680 bytes
    Variable Size 201326592 bytes
    Database Buffers 33554432 bytes
    Redo Buffers 667648 bytes
    Database mounted.


    SQL> alter session set sql_trace=true;

    Session altered.

    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> set linesize 120;
    SQL> alter database character set zhs16gbk;
    alter database character set zhs16gbk
    *
    ERROR at line 1:
    ORA-12712: new character set must be a superset of old character set

    SQL> ALTER DATABASE character set INTERNAL_USE zhs16gbk;

    # 使用INTERNAL_USE可以跳过超集的检查,ALTER DATABASE character set INTERNAL_USE

    Database altered.

    SQL> shutdown immediate;
    Database closed.
    Database dismounted.
    ORACLE instance shut down.


    SQL> STARTUP
    ORACLE instance started.

    Total System Global Area 235999352 bytes
    Fixed Size 450680 bytes
    Variable Size 201326592 bytes
    Database Buffers 33554432 bytes
    Redo Buffers 667648 bytes
    Database mounted.
    Database opened.


    SQL> select name,value$ from props$ where name like '%NLS%';

    NAME
    ------------------------------
    VALUE$
    ------------------------------------------------------------------------------------------------------------------------
    NLS_LANGUAGE
    AMERICAN

    NLS_TERRITORY
    AMERICA

    NLS_CURRENCY
    $


    NAME
    ------------------------------
    VALUE$
    ------------------------------------------------------------------------------------------------------------------------
    NLS_ISO_CURRENCY
    AMERICA

    NLS_NUMERIC_CHARACTERS
    .,

    NLS_CHARACTERSET
    ZHS16GBK



    NAME
    ------------------------------
    VALUE$
    ------------------------------------------------------------------------------------------------------------------------
    NLS_CALENDAR
    GREGORIAN

    NLS_DATE_FORMAT
    DD-MON-RR

    NLS_DATE_LANGUAGE
    AMERICAN


    NAME
    ------------------------------
    VALUE$
    ------------------------------------------------------------------------------------------------------------------------
    NLS_SORT
    BINARY

    NLS_TIME_FORMAT
    HH.MI.SSXFF AM

    NLS_TIMESTAMP_FORMAT
    DD-MON-RR HH.MI.SSXFF AM


    NAME
    ------------------------------
    VALUE$
    ------------------------------------------------------------------------------------------------------------------------
    NLS_TIME_TZ_FORMAT
    HH.MI.SSXFF AM TZR

    NLS_TIMESTAMP_TZ_FORMAT
    DD-MON-RR HH.MI.SSXFF AM TZR

    NLS_DUAL_CURRENCY
    $


    NAME
    ------------------------------
    VALUE$
    ------------------------------------------------------------------------------------------------------------------------
    NLS_COMP
    BINARY

    NLS_LENGTH_SEMANTICS
    BYTE

    NLS_NCHAR_CONV_EXCP
    FALSE


    NAME
    ------------------------------
    VALUE$
    ------------------------------------------------------------------------------------------------------------------------
    NLS_NCHAR_CHARACTERSET
    AL16UTF16

    NLS_RDBMS_VERSION
    9.2.0.1.0


    20 rows selected.

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  • 原文地址:https://www.cnblogs.com/amadeuslee/p/3744450.html
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