centos5.8_x86_64+asm+oracle11g操作系统centos5.8_64位安装桌面，关闭selinux以及关闭防火墙，1、内存以及swap分区大小，服务器2g以上内存就可以安装，尽可能给
centos5.8_x86_64+asm+oracle11g
操作系统centos5.8_64位
安装桌面，虚拟主机，关闭selinux以及关闭防火墙，
1、内存以及swap分区大小，服务器2g以上内存就可以安装，服务器空间，尽可能给大些。
minimum: 1 gb of ram
recommended: 2 gb of ram or more
todetermine the ram size, enter the following command:
#grepmemtotal /proc/meminfo
swap分区大小设置
between1 gb and 2 gb  分配1.5 times the size of the ram
between2 gb and 16 gb 分配equalto the size of the ram
morethan 16 gb        分配16gb
#grepswaptotal /proc/meminfo  确定大小
2、需要安装以下软件
binutils-2.20.51.0.2-5.11.el6(x86_64)
compat-libcap1-1.10-1(x86_64)
compat-libstdc++-33-3.2.3-69.el6(x86_64)
compat-libstdc++-33-3.2.3-69.el6.i686
gcc-4.4.4-13.el6(x86_64)
gcc-c++-4.4.4-13.el6(x86_64)
glibc-2.12-1.7.el6(i686)
glibc-2.12-1.7.el6(x86_64)
glibc-devel-2.12-1.7.el6(x86_64)
glibc-devel-2.12-1.7.el6.i686
ksh
libgcc-4.4.4-13.el6(i686)
libgcc-4.4.4-13.el6(x86_64)
libstdc++-4.4.4-13.el6(x86_64)
libstdc++-4.4.4-13.el6.i686
libstdc++-devel-4.4.4-13.el6(x86_64)
libstdc++-devel-4.4.4-13.el6.i686
libaio-0.3.107-10.el6(x86_64)
libaio-0.3.107-10.el6.i686
libaio-devel-0.3.107-10.el6(x86_64)
libaio-devel-0.3.107-10.el6.i686
make-3.81-19.el6
sysstat-9.0.4-11.el6(x86_64)
unixodbc*
libxp
pdksh
配置yum安装
将光盘挂载到/mnt位置
[root@oracle ~]# mount /dev/cdrom /mnt
[root@oracle ~]# vi /etc/yum.repos.d/base.repo
[base]
name=base
baseurl=file:///mnt/
enabled=1
gpgcheck=0
执行下面语句安装
yum -yinstall binutils compat-* elfutils-libelf* gcc gcc-c++ glibc* kernel-headersksh libaio* libgcc libgomp libstdc++* make sysstat libxp pdksh.x86_64 unixodbc unixodbc-devel
3、注意主机名
[oracle@oracle11g ~]$ cat /etc/hosts
# do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1              oracle11g localhost.localdomain localhost
::1            localhost6.localdomain6 localhost6
172.16.40.30   oracle
4、建立相应的用户和组
[root@oracle ~]# groupadd oinstall
[root@oracle ~]# groupadd dba
[root@oracle ~]# groupadd asmadmin
[root@oracle ~]# groupadd asmdba
[root@oracle ~]# useradd -g oinstall -g asmdba,asmadmin,dbagrid
[root@oracle ~]# useradd -g oinstall -g dba,asmdba oracle
[root@oracle ~]# passwd grid
[root@oracle ~]# passwd oracle
[root@oracle ~]# id grid
uid=500(grid) gid=500(oinstall)groups=500(oinstall),501(dba),502(asmadmin),503(asmdba)
[root@oracle ~]# id oracle
uid=501(oracle) gid=500(oinstall)groups=500(oinstall),501(dba),503(asmdba)
5、修改/etc/sysctl.conf文件，添加以下内容
fs.aio-max-nr = 1048576
fs.file-max = 6815744
kernel.shmall = 2097152