目的是备份数据库；又没与多余的硬盘空间，想挂载LINUX下的NFS 来实现；把步骤记录下来，供参考:
一、在LINUX 下把NFS 搭建完成；
[root@hostback ~]# rpm -qa |grep nfs
nfs-utils-lib-1.0.8-7.9.el5
nfs-utils-1.0.9-60.el5
[root@hostback CentOS]# pwd
/home/install_source/cdsorce/CentOS
[root@hostback CentOS]# ls nfs*
nfs4-acl-tools-0.3.3-3.el5.x86_64.rpm
nfs-utils-1.0.9-60.el5.x86_64.rpm
nfs-utils-lib-1.0.8-7.9.el5.i386.rpm
nfs-utils-lib-1.0.8-7.9.el5.x86_64.rpm
nfs-utils-lib-devel-1.0.8-7.9.el5.i386.rpm
nfs-utils-lib-devel-1.0.8-7.9.el5.x86_64.rpm
[root@hostback CentOS]# rpm -ivh nfs4-acl-tools-0.3.3-3.el5.x86_64.rpm
warning: nfs4-acl-tools-0.3.3-3.el5.x86_64.rpm: Header V3 DSA signature: NOKEY, key ID e8562897
Preparing... ########################################### [100%]
1:nfs4-acl-tools ########################################### [100%]
[root@hostback CentOS]# rpm -ivh nfs-utils-lib-devel-1.0.8-7.9.el5.x86_64.rpm
warning: nfs-utils-lib-devel-1.0.8-7.9.el5.x86_64.rpm: Header V3 DSA signature: NOKEY, key ID e8562897
Preparing... ########################################### [100%]
1:nfs-utils-lib-devel ########################################### [100%]
[root@hostback CentOS]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda3 67G 4.5G 59G 8% /
/dev/sda5 20G 4.5G 14G 25% /home
/dev/sda2 436G 199M 414G 1% /dbbak //要把该目录挂载到AIX下；
/dev/sda1 99M 12M 82M 13% /boot
tmpfs 7.9G 0 7.9G 0% /dev/shm
/dev/hda 4.3G 4.3G 0 100% /media/CentOS_5.8_Final
/dev/hda 4.3G 4.3G 0 100% /mnt/cdrom
[root@hostback ~]# vi /etc/exports
/dbbak/ 192.168.80.0/24(rw,no_root_squash)
然后重新启动NFS服务器，现在我们的SELINUX是强制状态,iptablesinput和output都是默认ACCEPT，由于NFS服务是基于portmap服务的，所以我们需要先启动portmap服务：service portmap restart ，然后 service nfs restart 使用showmount 指令看看是否共享成功showmount -e 后面跟你的服务器IP
[root@hostback ~]# showmount -e 192.168.80.98
Export list for 192.168.80.98:
/dbbak 192.168.80.0/24
[root@hostback /]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda3 67G 4.5G 59G 8% /
/dev/sda5 20G 4.5G 14G 25% /home
/dev/sda2 436G 199M 414G 1% /dbbak
/dev/sda1 99M 12M 82M 13% /boot
tmpfs 7.9G 0 7.9G 0% /dev/shm
/dev/hda 4.3G 4.3G 0 100% /media/CentOS_5.8_Final
/dev/hda 4.3G 4.3G 0 100% /mnt/cdrom
[root@hostback /]#
[root@hostback ~]# mount -t nfs 192.168.80.98:/dbbak /mnt/nfs //自己当作客户端挂载自己nfs 目录要新建
[root@hostback /]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda3 67G 4.5G 59G 8% /
/dev/sda5 20G 4.5G 14G 25% /home
/dev/sda2 436G 199M 414G 1% /dbbak
/dev/sda1 99M 12M 82M 13% /boot
tmpfs 7.9G 0 7.9G 0% /dev/shm
/dev/hda 4.3G 4.3G 0 100% /media/CentOS_5.8_Final
/dev/hda 4.3G 4.3G 0 100% /mnt/cdrom
192.168.80.98:/dbbak 436G 198M 414G 1% /mnt/nfs //已经有了
二、登录AIX ，
1、挂在linux nfs
root@ptdb1:/# mount 192.168.80.98:/dbbak /rmanbak
mount: 1831-008 giving up on:
192.168.80.98:/dbbak
vmount: Operation not permitted.
root@ptdb1:/# nfso -a | grep nfs_use_reserved_ports
nfs_use_reserved_ports = 0
默认情况,AIX系统执行mount命令请求时并不使用预先定义好的端口，设置nfs_use_reserved_ports后可使用1024以下的预定义端口
root@ptdb1:/# nfso -o nfs_use_reserved_ports=1
Setting nfs_use_reserved_ports to 1
root@ptdb1:/#
root@ptdb1:/# nfso -a | grep nfs_use_reserved_ports
nfs_use_reserved_ports = 1
root@ptdb1:/# mount -v nfs -o rw,bg,hard,rsize=32768,wsize=32768,vers=3,nointr,timeo=600,proto=tcp 192.168.80.98:/backdata /rmanbak //这样AIX 就可以正确挂载Linux 的nfs 共享文件了
root@ptdb1:/# df -g
Filesystem GB blocks Free %Used Iused %Iused Mounted on
/dev/hd4 6.00 5.73 5% 10619 1% /
/dev/hd2 15.00 12.57 17% 51403 2% /usr
/dev/hd9var 5.00 4.66 7% 6253 1% /var
/dev/hd3 10.00 9.96 1% 438 1% /tmp
/dev/fwdump 1.00 0.99 1% 16 1% /var/adm/ras/platform
/dev/hd1 20.00 19.97 1% 177 1% /home
/dev/hd11admin 5.00 5.00 1% 5 1% /admin
/proc - - - - - /proc
/dev/hd10opt 5.00 4.78 5% 8548 1% /opt
/dev/livedump 2.00 2.00 1% 4 1% /var/adm/ras/livedump
/dev/fslv00 80.00 66.49 17% 65283 1% /oracle
/dev/fslv01 70.00 48.63 31% 644368 6% /grid
192.168.80.98:/dbbak 435.91 413.21 6% 11 1% /rmanbak
root@ptdb1:/rmanbak# mount
node mounted mounted over vfs date options
-------- --------------- --------------- ------ ------------ ---------------
/dev/hd4 / jfs2 Oct 21 20:38 rw,log=/dev/hd8
/dev/hd2 /usr jfs2 Oct 21 20:38 rw,log=/dev/hd8
/dev/hd9var /var jfs2 Oct 21 20:38 rw,log=/dev/hd8
/dev/hd3 /tmp jfs2 Oct 21 20:38 rw,log=/dev/hd8
/dev/fwdump /var/adm/ras/platform jfs2 Oct 21 20:39 rw,log=/dev/hd8
/dev/hd1 /home jfs2 Oct 21 20:39 rw,log=/dev/hd8
/dev/hd11admin /admin jfs2 Oct 21 20:39 rw,log=/dev/hd8
/proc /proc procfs Oct 21 20:39 rw
/dev/hd10opt /opt jfs2 Oct 21 20:39 rw,log=/dev/hd8
/dev/livedump /var/adm/ras/livedump jfs2 Oct 21 20:39 rw,log=/dev/hd8
/dev/fslv00 /oracle jfs2 Oct 21 20:39 rw,log=/dev/hd8
/dev/fslv01 /grid jfs2 Oct 21 20:39 rw,log=/dev/hd8
192.168.80.98 /dbbak /rmanbak nfs3 Jun 09 21:51
2、使用smitty nfs ，创建NFS文件系统，或者直接在/etc/filesystems后面有添加如下显示：
/home/oracle/rmanbak:
dev = /backdata
vfs = nfs
nodename = 192.168.80.98
mount = true
options = rw,bg,hard,nointr,rsize=32768,wsize=32768,proto=tcp,vers=3,timeo=600
account = false
测试：
oracle@ptdb1:/rmanbak$expdp system/oracle directory=mypump dumpfile=expxiaobi.dmp log=expxiaobi.log schemas=xiaobi
Export: Release 11.2.0.3.0 - Production on Wed Aug 6 15:22:03 2014
Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.
Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
Data Mining and Real Application Testing options
Legacy Mode Active due to the following parameters:
Legacy Mode Parameter: "log=expxiaobi.log" Location: Command Line, Replaced with: "logfile=expxiaobi.log"
Legacy Mode has set reuse_dumpfiles=true parameter.
Starting "SYSTEM"."SYS_EXPORT_SCHEMA_01": system/******** directory=mypump dumpfile=expxiaobi.dmp logfile=expxiaobi.log schemas=xiaobi reuse_dumpfiles=true
Estimate in progress using BLOCKS method...
Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA
Total estimation using BLOCKS method: 30 MB
Processing object type SCHEMA_EXPORT/USER
Processing object type SCHEMA_EXPORT/SYSTEM_GRANT
Processing object type SCHEMA_EXPORT/ROLE_GRANT
Processing object type SCHEMA_EXPORT/DEFAULT_ROLE
Processing object type SCHEMA_EXPORT/PRE_SCHEMA/PROCACT_SCHEMA
Processing object type SCHEMA_EXPORT/TABLE/TABLE
. . exported "XIAOBI"."TEST" 8.253 MB 85644 rows
. . exported "XIAOBI"."TEST2" 8.253 MB 85645 rows
. . exported "XIAOBI"."TEST3" 8.253 MB 85646 rows
Master table "SYSTEM"."SYS_EXPORT_SCHEMA_01" successfully loaded/unloaded
******************************************************************************
Dump file set for SYSTEM.SYS_EXPORT_SCHEMA_01 is:
/rmanbak/expxiaobi.dmp
Job "SYSTEM"."SYS_EXPORT_SCHEMA_01" successfully completed at 15:23:01
oracle@ptdb1:/rmanbak$impdp system/oracle directory=mypump dumpfile=expxiaobi.dmp log=impxiaobi.log remap_schema=xiaobi:xiahao
Import: Release 11.2.0.3.0 - Production on Wed Aug 6 15:28:57 2014
Copyright (c) 1982, 2011, Oracle and/or its affiliates. All rights reserved.
Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, Real Application Clusters, Automatic Storage Management, OLAP,
Data Mining and Real Application Testing options
Legacy Mode Active due to the following parameters:
Legacy Mode Parameter: "log=impxiaobi.log" Location: Command Line, Replaced with: "logfile=impxiaobi.log"
Master table "SYSTEM"."SYS_IMPORT_FULL_01" successfully loaded/unloaded
Starting "SYSTEM"."SYS_IMPORT_FULL_01": system/******** directory=mypump dumpfile=expxiaobi.dmp logfile=impxiaobi.log remap_schema=xiaobi:xiahao
Processing object type SCHEMA_EXPORT/USER
ORA-31684: Object type USER:"XIAHAO" already exists
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/PRE_SCHEMA/PROCACT_SCHEMA
Processing object type SCHEMA_EXPORT/TABLE/TABLE
Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA
. . imported "XIAHAO"."TEST" 8.253 MB 85644 rows
. . imported "XIAHAO"."TEST2" 8.253 MB 85645 rows
. . imported "XIAHAO"."TEST3" 8.253 MB 85646 rows
Job "SYSTEM"."SYS_IMPORT_FULL_01" completed with 1 error(s) at 15:29:09
oracle@ptdb1:/rmanbak$
oracle@ptdb1:/rmanbak$
oracle@ptdb1:/rmanbak$exit
15:29:26 sys@PORTALDB> conn xiahao/xiahao123
Connected.
15:29:34 xiahao@PORTALDB> select * from tab;
TNAME TABTYPE CLUSTERID
------------------------------ ------- ----------
TEST TABLE
TEST2 TABLE
TEST3 TABLE
使用RMAN测试 也是正常的；
RMAN> backup tablespace xiahao format '/rmanbak/%U';
Starting backup at 06-AUG-14
using channel ORA_DISK_1
channel ORA_DISK_1: starting full datafile backup set
channel ORA_DISK_1: specifying datafile(s) in backup set
input datafile file number=00006 name=+ORADATA/portaldb/datafile/xiahao.283.834596721
input datafile file number=00007 name=+ORADATA/portaldb/datafile/xiahao.284.834596877
channel ORA_DISK_1: starting piece 1 at 06-AUG-14
channel ORA_DISK_1: finished piece 1 at 06-AUG-14
piece handle=/rmanbak/0jpf9ctb_1_1 tag=TAG20140806T153259 comment=NONE
channel ORA_DISK_1: backup set complete, elapsed time: 00:00:01
Finished backup at 06-AUG-14
Starting Control File and SPFILE Autobackup at 06-AUG-14
piece handle=/oracle/product/11.2.0/dbs/c-663718102-20140806-00 comment=NONE
Finished Control File and SPFILE Autobackup at 06-AUG-14