1.(Window：)cmd下輸入set ORACLE_SID=你想進入的數據庫的那個sid

(Linux：)切換到oracle用戶：export ?ORACLE_SID=你想進入的數據庫的那個sid

2.輸入 sqlplus /nolog

3.將數據庫啟動到RESTRICTED模式下做字符集更改：

SQL>?conn /as sysdba

Connected.

SQL>?shutdown immediate;

Database closed.

Database dismounted.

ORACLE instance shut down.

SQL>startup mount

ORACLE instance started.

Total System Global Area ?236000356 bytes

Fixed Size ? ? ? ? ? ? ? ? ? 451684 bytes

Variable Size ? ? ? ? ? ? 201326592 bytes

Database Buffers ? ? ? ? ? 33554432 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.

--修改為中文字符集

SQL>?ALTER DATABASE character set INTERNAL_USE ZHS16GBK;

--修改為英文字符集

SQL>?ALTER DATABASE character set INTERNAL_USE ?AL32UTF8;

Database altered.

SQL>select * from v$nls_parameters;

略

19 rows selected.

重啟檢查是否更改完成：

SQL>?shutdown immediate;

Database closed.

Database dismounted.

ORACLE instance shut down.

SQL>?startup

ORACLE instance started.

Total System Global Area ?236000356 bytes

Fixed Size ? ? ? ? ? ? ? ? ? 451684 bytes

Variable Size ? ? ? ? ? ? 201326592 bytes

Database Buffers ? ? ? ? ? 33554432 bytes

Redo Buffers ? ? ? ? ? ? ? ? 667648 bytes

Database mounted.

Database opened.

SQL>?select * from v$nls_parameters;

總結

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