前提：

源端字符集：SIMPLIFIED CHINESE_CHINA.ZHS16GBK

目标端字符集：AMERICAN _ AMERICA. AL32UTF8

1. 查询源端和目标端字符集类型：select userenv(‘language’) from dual;

2. 修改目标端字符集：

3. shutdown immediate;

4. STARTUP MOUNT;

5. ALTER SYSTEM ENABLE RESTRICTED SESSION;

6. ALTER SYSTEM SET JOB_QUEUE_PROCESSES=0;

7. ALTER SYSTEM SET AQ_TM_PROCESSES=0;

8. ALTER DATABASE OPEN;

9. ALTER DATABASE CHARACTER SET INTERNAL_USE ZHS16GBK;

10. alter system set NLS_LANGUAGE='SIMPLIFIED CHINESE' scope=spfile;

11. alter system set NLS_TERRITORY='CHINA' scope=spfile;

12. shutdown immediate;

13. startup;

14. 再次查看可看到字符集已与源端字符集一致。

15. 将导出的DMP文件上传到Linux的/home/oracle目录

16. 进入数据库，创建impdp路径：create directory expdir as‘/home/oracle’;

17. 授予system用户读写该路径权限：grant read,write on directory expdir to system;

18. 执行impdp操作：impdp system/***** directory=expdir dumpfile=$exp.dmp full=y logfile=$imp.log