一、在AIX下挂载NFS后，手动运行rman备份脚本
报错信息如下：
RMAN-03009: failure of backup command on ch1 channel at 05/05/2014 19:07:05
ORA-19504: failed to create file "/sapbackup/orabak/rman_bak/bak_20140505_7fp7hu6o_1_1"
ORA-27054: NFS file system where the file is created or resides is not mounted with correct options
Additional information: 6
然后检查目录权限，发现有读写和可执行的权限，并且尝试在目录里面新建和删除文件操作，均未发现异常。
二、查询oracle官方资料，说可能是一个早期的bug
如是根据官方给的提示进行操作：
vim /etc/filesystems
#添加如下内容：
/sapbackup/orabak:
dev = /volume1/sap_db
vfs = nfs
nodename = 10.203.20.67
mount = true
options = rw,bg,hard,rsize=32768,wsize=32768,vers=3,cio,intr,timeo=600,proto=tcp
account = false
官方参考资料：
mount -o hard,bg,proto=tcp,suid,rsize=32768,wsize=32768,noac 10.203.20.67:/volume1/sap_db /sapbackup/orabak
直接使用umount /sapbackup/orabak，提示“umount: device is busy”，如是使用下面的命令进行卸载操作（Linux下通常是使用fuser -km /mnt/cdrom 查询当前使用的进程，并kill掉）
AIX下umount命令：
fuser -kxuc /sapbackup/orabak
umount /sapbackup/orabak #如果卸载但提示设备正被使用的话，可以使用umount -f参数
mount -v nfs -o rw,bg,hard,rsize=32768,wsize=32768,vers=3,cio,intr,timeo=600,proto=tcp 10.203.20.67:/volume1/sap_db /orabak
# startsrc -g nfs
# nfso -a | grep nfs_use_reserved_ports
# nfso -o nfs_use_reserved_ports=1
# mount -v nfs -o rw,bg,hard,rsize=32768,wsize=32768,vers=3,cio,intr,timeo=600,proto=tcp 10.203.20.67:/volume1/sap_db /orabak
# mount 10.203.10.157:/SAP /nfs
# df -g
三、尝试使用下面的备份脚本：
# cat sapprd_bak.sh
rman nocatalog target / <<EOF
run{
configure retention policy to recovery window of 31 days;
allocate channel ch1 device type disk;
crosscheck backup;
crosscheck archivelog all;
sql 'alter system archive log current';
backup database format "/sapbackup/orabak/rman_bak/bak_%T_%U";
sql 'alter system archive log current';
backup archivelog all format '/sapbackup/orabak/rman_bak/arch_bak_%T_%U' delete all input;
backup current controlfile format '/sapbackup/orabak/rman_bak/con_bak_%T_%U';
crosscheck backup;
crosscheck archivelog all;
delete noprompt expired backup;
delete noprompt obsolete;
delete noprompt backup of database completed before 'sysdate - 31';
release channel ch1;
}
exit
EOF
测试备份成功！
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生产系统需要导出数据到一个NFS目录下报错
bash-3.00$ expdp \'/ as sysdba\' directory=bak_data_pump_dir schemas=epm_ha dumpfile=epm_ha.dmp logfile=epm_ha.log
Export: Release 10.2.0.4.0 - 64bit Production on Friday, 21 May, 2010 16:09:25
Copyright (c) 2003, 2007, Oracle. All rights reserved.
Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 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 "/epmhis/DATA_PUMP_EPMHA1/epm_ha.dmp"
ORA-27054: NFS file system where the file is created or resides is not mounted with correct options
Additional information: 2
网上搜索资料，解决方法包括设置事件10298 level 32，alter system set event='10298 trace name context forever, level 32' scope = spfile;打补丁：5146667，或者在mount的时候设置参数：rw,bg,hard,nointr,rsize=32768,wsize=32768,tcp,vers=3,timeo=600,actimeo=0。在solaris系统上tcp参数不可用。
由于是生产系统，尽量采用不停数据库来解决，重新mount。
1 umount目录
umount /epmhis
2 mount目录加一些参数
mount -F nfs -o rw,hard,nointr,noac,vers=3,rsize=32768,wsize=32768 IP地址:/epmhis /20100521
3 重新expdp导出文件到NFS目录
Export: Release 10.2.0.4.0 - 64bit Production on Friday, 21 May, 2010 16:41:37
Copyright (c) 2003, 2007, Oracle. All rights reserved.
;;;
Connected to: Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bit Production
With the Partitioning, Real Application Clusters, OLAP, Data Mining
and Real Application Testing options
FLASHBACK automatically enabled to preserve database integrity.
Starting "SYS"."SYS_EXPORT_SCHEMA_15": '/******** AS SYSDBA' directory=bak_data_pump_dir schemas=epm_ha dumpfile=epm_ha.dmp logfile=epm_ha.log
Estimate in progress using BLOCKS method...
Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA
Total estimation using BLOCKS method: 355.2 GB
Processing object type SCHEMA_EXPORT/USER
Processing object type SCHEMA_EXPORT/SYSTEM_GRANT
Processing object type SCHEMA_EXPORT/ROLE_GRANT
Processing object type SCHEMA_EXPORT/DEFAULT_ROLE
Processing object type SCHEMA_EXPORT/TABLESPACE_QUOTA
Processing object type SCHEMA_EXPORT/PRE_SCHEMA/PROCACT_SCHEMA
Processing object type SCHEMA_EXPORT/SYNONYM/SYNONYM
Processing object type SCHEMA_EXPORT/DB_LINK
Processing object type SCHEMA_EXPORT/SEQUENCE/SEQUENCE
Processing object type SCHEMA_EXPORT/SEQUENCE/GRANT/OWNER_GRANT/OBJECT_GRANT
Processing object type SCHEMA_EXPORT/TABLE/TABLE
Master table "SYS"."SYS_EXPORT_SCHEMA_15" successfully loaded/unloaded
******************************************************************************
Dump file set for SYS.SYS_EXPORT_SCHEMA_15 is:
/epmhis/DATA_PUMP_EPMHA1/epm_ha.dmp
Job "SYS"."SYS_EXPORT_SCHEMA_15" successfully completed at 17:56:28
没有报错，问题解决。
原文地址：http://blog.51cto.com/sf1314/2056961