Oracle 数据库数据导出dump方式
linux下

[oracle@infodb111 /]$ oerr ora 3900639006, 00000, "internal error"// *Cause: An unexpected error occurred while processing a Data Pump job.//          Subsequent messages supplied by DBMS_DATAPUMP.GET_STATUS//          will further describe the error.// *Action: Contact Oracle Customer Support.[oracle@infodb111 /]$ oerr ora 3921339213, 00000, "Metadata processing is not available"// *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.

根据oerr ora 39213提示，执行exec dbms_metadata_util.load_stylesheets;

再进行导出正常，问题解决。