Oracle 数据导入到新库出现中文乱码的原因：旧库和新库的字符集不一致引起的。
1、查询字符集的值
select parameter,value from nls_database_parameters where parameter='NLS_CHARACTERSET';
2、更改字符集
SQL> SHUTDOWN IMMEDIATE;
SQL> STARTUP MOUNT;
SQL> ALTER SESSION SET SQL_TRACE=TRUE;
SQL> ALTER SYSTEM ENABLE RESTRICTED SESSION;
SQL> ALTER SYSTEM SET JOB_QUEUE_PROCESSES=0;
SQL> ALTER SYSTEM SET AQ_TM_PROCESSES=0;
SQL> ALTER DATABASE OPEN;
SQL> ALTER DATABASE CHARACTER SET ZHS16GBK;
SQL> alter database character set internal_use ZHS16GBK;
SQL> SHUTDOWN IMMEDIATE;
SQL> STARTUP;
1、查询字符集的值
select parameter,value from nls_database_parameters where parameter='NLS_CHARACTERSET';
2、更改字符集
SQL> SHUTDOWN IMMEDIATE;
SQL> STARTUP MOUNT;
SQL> ALTER SESSION SET SQL_TRACE=TRUE;
SQL> ALTER SYSTEM ENABLE RESTRICTED SESSION;
SQL> ALTER SYSTEM SET JOB_QUEUE_PROCESSES=0;
SQL> ALTER SYSTEM SET AQ_TM_PROCESSES=0;
SQL> ALTER DATABASE OPEN;
SQL> ALTER DATABASE CHARACTER SET ZHS16GBK;
SQL> alter database character set internal_use ZHS16GBK;
SQL> SHUTDOWN IMMEDIATE;
SQL> STARTUP;
SQL> execute sys.dbms_metadata_util.load_stylesheets;
本文转自1321385590 51CTO博客，原文链接：http://blog.51cto.com/linux10000/2059105，如需转载请自行联系原作者
