下载oracle的安装包：
下载地址：
注意下载oracle是需要注册oracle的
http://download.oracle.com/otn/nt/oracle11g
下载两个包：
linux.x64_11gR2_database_1of2.zip
linux.x64_11gR2_database_2of2.zip
1、上传：到服务器：
mkdir -p /usr/local/oracle
cd /usr/local/oracle
将两个包放在环境中：
unzip linux.x64_11gR2_database_1of2.zip
unzip linux.x64_11gR2_database_2of2.zip
2、准备oracle的安装目标目录
mkdir –p /opt/oracle
3、创建oracle相关用户和用户组
groupadd dba
groupadd oinstall
useradd -g oinstall -G dba oracle
passwd oracle
输入密码：
修改安装目录权限：
chown –R oracle:oinstall /opt/oracle
4，挂载安装载：
上传安装盘到服务器：
安装盘名称：RHEL_5.6x86_64.iso
挂载目录：/home/os
mkdir -p /home/os
mount -o loop -t iso9660 RHEL_5.6x86_64.iso os
cd os/Server
5,安装所需要基本编译工具：
[[email protected] oracle]#rpm -ivh kernel-headers-
[[email protected] oracle]#rpm -ivh glibc-headers-
[[email protected] oracle]#rpm -ivh glibc-devel-
[[email protected] oracle]#rpm -ivh libgomp-
[[email protected] oracle]#rpm -ivh sysstat-
[[email protected] oracle]#rpm -ivh libaio-devel-
[[email protected] oracle]#rpm -ivh libstdc++-devel-
[[email protected] oracle]#rpm -ivh unixODBC-
[[email protected] oracle]#rpm -ivh unixODBC-devel
[[email protected] oracle]#rpm -ivh gcc-
[[email protected] oracle]#rpm -ivh gcc-c++-
[[email protected] oracle]#rpm -ivh elfutils-libelf-devel- elfutils-libelf-devel-static-
6，设置修改核参数：
打开 /etc/sysctl.conf，在最后加入以下内容
kernel.shmmni = 4096
kernel.sem = 250 32000 100 128
net.core.rmem_default = 4194304
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
fs.file-max = 6815744
net.ipv4.ip_local_port_range = 9000 65500
net.core.wmem_max = 1048576
fs.aio-max-nr = 1048576
使其生效：
sysctl -p
7，修改 /etc/security/limits.conf，oracle 用户登陆的限制参数：在最后加入以下内容
oracle soft nproc 2047
oracle hard nproc 16384
oracle soft nofile 1024
oracle hard nofile 65536
8，修改系统环境变量/etc/profile
修改环境变量/etc/profile，加入以下内容
if [ $USER = "oracle" ]; then
if [ $SHELL = "/bin/ksh" ]; then
ulimit -p 16384
ulimit -n 65536
else
ulimit -u 16384 -n 65536
fi
fi
9：设置ORACLE环境变量
export ORACLE_SID=orcl
export ORACLE_BASE=/opt/oracle/app
export ORACLE_HOME=$ORACLE_BASE/product/11.2.0/dbhome_1
export PATH=$PATH:$HOME/bin:$ORACLE_HOME/bin
export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/usr/lib
10：修改用户登陆环境变量 .bashrc
export ORACLE_SID=orcl
export ORACLE_BASE=/opt/oracle/app
export ORACLE_HOME=$ORACLE_BASE/product/11.2.0/dbhome_1
export PATH=$PATH:$HOME/bin:$ORACLE_HOME/bin
export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/usr/lib
11:执行安装
安装第一步：
su - oracle
cd /usr/local/oracle/database
请下载db.rsp 到家目录 /home/oracle下，然后执行
./runInstaller -silent -noconfig -ignorePrereq -responseFile /home/oracle/db.rsp
执行
查看安装过程
可以到/home/oracle/oraInventory/logs 目录下查看安装进度。
tail -100f installActions2014-09-03_10-36-42AM.log
3）安装成功提示执行脚本
到最后提示：
/opt/app/oracle/oraInventory/orainstRoot.sh
/opt/app/oracle/product/11.2.0/db_1/root.sh
To execute the configuration scripts:
1. Open a terminal window
2. Log in as "root"
3. Run the scripts
4. Return to this window and hit "Enter" key to continue
Successfully Setup Software.