expdp出dmp文件到NFS NAS报错ora-39001 ora-39000 ora-31641 ora-27054

通过查询metalink id :387700.1
 
文档上说可能的问题有以下几种：
a) The mount table (eg; /etc/mnttab) can be read to check the mount options 
b) The NFS mount is mounted with the "hard" option 
c) The mount options include rsize>=32768 and wsize>=32768 
d) For RAC environments, where NFS disks are supported, the "noac" mount option is used. 
 
文档上指出通过设置event 10298事件可以避免，不过设置event 10298需要重启数据库生效 。
  
检查NFS的配置，发现客户端的/etc/filesystems中未加入mount nfs文件系统的条目
 
增加以下条目后，重新mount，解决。
 
#vi /etc/filesystems
/exp:
        dev             = /exp
        vfs             = nfs
        nodename        = 192.168.1.20
        mount           = true
        options         = rw,bg,hard,intr,proto=tcp,vers=3,rsize=65536,wsize=65536,timeo=600
        account         = false 
 
#umount /oraexp
#mount /oraexp
 
建议大家以后遇到类似问题，先检查/etc/filesystems文件，这个问题都是由于大家都喜欢使用以下方式mount nfs导致。

LINUX 使用以下方法： 
mount -o rw,bg,hard,intr,proto=tcp,vers=3,rsize=65536,wsize=65536,timeo=600 192.168.1.20:/exp /exp
aix 使用以下方法：
 mount -o hard,bg,proto=tcp,suid,rsize=32768,wsize=32768,noac  192.168.1.20:/backup  /backup
 aix 参考文章
ORA-19504 ORA-27054 Errors mounting NFS file system (Doc ID 370513.1)
//相关metalink 文档如下：
 
ORA-19504 ORA-27054 Errors mounting NFS file system [ID 370513.1]
RMAN Backup Fails With RMAN-03009 ORA-19504 ORA-27054 NFS file system where the file is created or resides is not mounted with correct options [ID 1472448.1]
ORA-27054: NFS file system where the file is created or resides is not mounted with correct options [ID 781349.1]
 
//另外设置10298的过程如下：
 
1) set the Event 10298 in the init file 
event="10298 trace name context forever, level 32" 
if you are using the spfile then the following can be done 
 
sql> alter system set event='10298 trace name context forever, level 32'scope= spfile ;