1.修改主机名：

# sed -i "s/HOSTNAME=localhost.localdomain/HOSTNAME=oracledb/" /etc/sysconfig/network

# hostname oracledb

2.添加解析主机名记录

# vi /etc/hosts

192.168.1.11 oracledb

3.安装依赖包

# yum -y install glibc* gcc* make* compat-db* libstdc* libXp* libXtst* compat-libstdc++* 

4.添加安装用户oracle

# groupadd oinstall 

# groupadd dba 

# useradd -g oinstall -G dba oracle

5.设置oracle用户密码

# passwd oracle

6.修改oracle的环境变量在最后添加

# vi /home/oracle/.bash_profile

export ORACLE_BASE=/opt/oracle

export ORACLE_HOME=$ORACLE_BASE/112

export ORACLE_SID=orcl

export LD_LIBRARY_PATH=$ORACLE_HOME/lib

export PATH=$PATH:$ORACLE_HOME/bin

7.修改内核参数文件

# vi /etc/sysctl.conf

fs.aio-max-nr = 1048576

fs.file-max = 6815744

kernel.shmall = 2097152

kernel.shmmax = 536870912

kernel.shmmni = 4096

kernel.sem = 250 32000 100 128

net.ipv4.ip_local_port_range = 9000 65500

net.core.rmem_default = 262144

net.core.rmem_max = 4194304

net.core.wmem_default = 262144

net.core.wmem_max = 1048586

8.使修改生效

# sysctl -p

9.添加认证模块，在后面添加一行

# vim /etc/pam.d/login

session required pam_limits.so

10.在全局变量文件中添加

# vim /etc/profile

if [ $USER = "oracle" ]; then

if [ $SHELL = "/bin/bash" ]; then

ulimit -p 16384

ulimit -n 65536

else

ulimit -u 16384 -n 65536

fi

fi

# source /etc/profile

11.创建相应目录并授权oracle

# mkdir -p /opt/oracle/112

# mkdir -p /opt/oralnventory

# mkdir -p /opt/oradata

# chown -R oracle:oinstall oralnventory/

# chown -R oracle:dba oracle/

12.切换到oracle

# xhost +

# su - oracle   

13.执行./runInstaller 开始图形安装