1.Oracle Linux官方源网址
        http://public-yum.oracle.com/
2.使用方法很简单，肯定是在你安装完OEL后（默认安装完OEL是不会自带源配置文件的）
   进入/etc/yum.repos.d 目录，再下载你安装的OEL版本对应的配置文件即可
    Oracle Linux 4, Update 6 or Newer        
    # cd /etc/yum.repos.d        
    # mv Oracle-Base.repo Oracle-Base.repo.disabled               
    # wget http://public-yum.oracle.com/public-yum-el4.repo                 
    Oracle Linux 5               
    # cd /etc/yum.repos.d               
    # wget http://public-yum.oracle.com/public-yum-el5.repo                 
    Oracle Linux 6               
    # cd /etc/yum.repos.d               
    # wget http://public-yum.oracle.com/public-yum-ol6.repo                 
    Oracle VM 2               
    # cd /etc/yum.repos.d               
    # wget http://public-yum.oracle.com/public-yum-ovm2.repo                 
3.在下载完源配置文件后，还需要修改配置文件启用相对应的仓库,修改enable=0至enable=1               
    比如你安装的OEL版本为5.5，那则是修改               
    [ol5_u5_base]                        
    name=Oracle Linux $releasever Update 5 installation media copy ($basearch)                        
    baseurl=http://public-yum.oracle.com/repo/OracleLinux/OL5/5/base/x86_64/                        
    gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-oracle                        
    gpgcheck=1                        
    enabled=1                        
               
    如果你还打算使用Oracle自己的Unbreakable Enterprise内核的话，则还需启用UEK，如下所示               
    [ol5_UEK_latest]                        
    name=Latest Unbreakable Enterprise Kernel for Oracle Linux $releasever ($basearch)                        
    baseurl=http://public-yum.oracle.com/repo/OracleLinux/OL5/UEK/latest/$basearch/                        
    gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-oracle                        
    gpgcheck=1                        
    enabled=1                        
               
4.最后保存配置文件，更新一下系统安装需要的软件即可               
    附：               

     安装Oracle Database 11g之前不是需要进行很多配置嘛，如果想偷懒的话，可以安装oracle-rdbms-server-11gR2-preinstall RPM 软件包简化安装，具体可参考               

          http://www.oracle.com/technetwork/cn/articles/servers-storage-admin/ginnydbinstallonlinux6-1845247-zhs.html                 

            参考：               

           http://koumm.blog.51cto.com/703525/1283867                 
           http://www.ha97.com/4891.html                 
           http://www.oracle.com/technetwork/cn/articles/servers-storage-admin/ginnydbinstallonlinux6-1845247-zhs.html