现象：

Export: Release 10.2.0.5.0 - 64bit Production on Friday, 02 December, 2016 20:19:48

Copyright (c) 2003, 2007, Oracle.  All rights reserved.

Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - 64bit Production

With the Partitioning, Real Application Clusters, OLAP, Data Mining

and Real Application Testing options

ORA-39001: invalid argument value

ORA-39000: bad dump file specification

ORA-31641: unable to create dump file "/backup/xian.dmp"

ORA-27054: NFS file system where the file is created or resides is not mounted with correct options

Additional information: 3

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Additional information: 18

原因：

文件夹MOUNT NFS时未加相关参数

需要追加参数：rw,bg,hard,nointr,rsize=32768,wsize=32768,tcp,vers=3,timeo=600,actimeo=0

解决：改成如下

mount -t nfs -o rw,bg,hard,nointr,rsize=32768,wsize=32768,tcp,vers=3,timeo=600,actimeo=0 10.71.13.109:/oracle/backup/ /backup