oracel 恢复出现IMP-00038错误，哪位大侠，怎么解决，问题出现在哪里，最好有有图解

[石工记]

[oracle@~ tmp]$ imp system/manager@orcl file=/tmp/metadata.dmp ignore=y full=y;

Import: Release 11.2.0.1.0 - Production on Sun Jan 31 12:05:09 2016

Copyright (c) 1982, 2009, Oracle and/or its affiliates. All rights reserved.


Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options

IMP-00038: Could not convert to environment character set's handle

IMP-00000: Import terminated unsuccessfully

[jdsnhan]

导出是什么环境