expdp时出现错误：ORA-39006: internal error

[oracle@www.52uu.org ~]$ expdp admin/admin tables=studentinfo,teacherinfo DIRECTORY=dpump_dir3 dumpfile=info.dmp content=all

Export: Release 10.2.0.1.0 - Production on Tuesday, 25 May, 2010 18:23:02

Copyright (c) 2003, 2005, Oracle. All rights reserved.

Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production

With the Partitioning, OLAP and Data Mining options

ORA-39006: internal error

ORA-39213: Metadata processing is not available

网上查了下，解决方法如下描述：

Cause: The Data Pump could not use the Metadata API. Typically, this is caused by the XSL stylesheets not being set up properly.

Action: Connect AS SYSDBA and execute dbms_metadata_util.load_stylesheets to reload the stylesheets.

执行如下：

[oracle@www.52uu.org ~]$ sqlplus / as sysdba

SQL*Plus: Release 10.2.0.1.0 - Production on Tue May 25 18:25:26 2010

Copyright (c) 1982, 2005, Oracle.  All rights reserved.

Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options

SQL> execute dbms_metadata_util.load_stylesheets;

PL/SQL procedure successfully completed.