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; SQL> execute sys.dbms_metadata_util.load_stylesheets;