安装RedHat的时候需要注意的时候要选择所有的组件进行安装，尤其是桌面的部分，不然重启之后没有图形界面就比较坑了。然后就是安
本文描述的是在RHEL 6.3上面安装Oracle 11g的过程，关于RHEL的下载，其实可以去很多的镜像站点下载，例如下载地址，Oracle 11g的下载地址，需要注意的是本文使用的是11.2.0.3的版本，现在该版本还没有开放下载，只适用付费账户下载，，付费账户不便公布，需要该版本的可以邮件联系我dazuanfeng@qq.com，读者可以下载已经公布的版本，下载1，下载2。
安装RedHat的时候需要注意的时候要选择所有的组件进行安装，尤其是桌面的部分，不然重启之后没有图形界面就比较坑了。。。
然后就是安装vmware tools了，解压缩之后，以root身份运行vmware-install.pl文件，一路回车即可完成安装，安装完成之后重启虚拟机。
在安装Oracle数据库的时候需要对一些参数环境参数进行设置，而且要安装一些相应的依赖包，为了安装方便，我们使用CentOS的yum。
安装centos的yum的步骤：
1.删除RedHat原有的yum：
rpm -aq|grep yum|xargs rpm -e --nodeps
2.下载yum安装组件：（随本机安装版本而定）
wget http:
wget http:
如果不能下载也可以使用自己另外下载的centos里面的安装包
3.进行安装yum
rpm -ivh python-iniparse-0.3.1-2.1.el6.noarch.rpm rpm -ivh yum-metadata-parser-1.1.2-16.el6.x86_64.rpm rpm -ivh yum-3.2.29-30.el6.centos.noarch.rpm yum-plugin-fastestmirror-1.1.30-14.el6.noarch.rpm
最后两个包一块安装，会相互依赖
4.在/etc/yum.repos.d/文件夹下新建一个名为rhel-debuginfo.repo的文件，使用gedit输入以下的内容:
[base]
name=CentOS-$releasever - Base
baseurl=http://mirrors.163.com/centos/6.3/os/$basearch/
gpgcheck=1
gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-6
#released updates
[updates]
name=CentOS-$releasever - Updates
baseurl=http://mirrors.163.com/centos/6.3/updates/$basearch/
gpgcheck=1
gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-6
#packages used/produced in the build but not released
#[addons]
#name=CentOS-$releasever - Addons
#baseurl=http://mirrors.163.com/centos/$releasever/addons/$basearch/
#gpgcheck=1
#gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-6
#additional packages that may be useful
[extras]
name=CentOS-$releasever - Extras
baseurl=http://mirrors.163.com/centos/6.3/extras/$basearch/
gpgcheck=1
gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-6
#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-$releasever - Plus
baseurl=http://mirrors.163.com/centos/6.3/centosplus/$basearch/
gpgcheck=1
enabled=0
5.yum clean all
6.这时候也可以测试一下yum命令是否可用，也可以使用yum update进行升级。
yum install vim
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