Oracle在linux上安装前需要做一系列的配置；每次搭建环境如果都手动执行有点慢；这里写了两个脚本，实现自动化配置和安装，目前在

Oracle在linux上安装前需要做一系列的配置；每次搭建环境如果都手动执行有点慢；
这里写了两个脚本，实现自动化配置和安装，目前在自己的CentOS6.3的linux模板上安装成功；
在其他系统上未测试，使用前，要先理解脚本，配置好一个网卡的静态IP地址，适当修改后再操作；
脚本由一系列函数，顺序组成；

#!/bin/bash
#set -x
echo "Start Configure Oracle Environment For Install......................... "
time=`date +%Y%m%d_%H%M%S`
flag="####################################################################"

#备份配置文件，很简单，仅仅是复制一下将要修改的系统配置文件；复制了两份，便于恢复
backup_config(){
#echo "$flag"
echo "#########################Step 1:backup system config that will be modified###########################"
cp /etc/sysconfig/network /etc/sysconfig/network.bak${time}
cp /etc/sysctl.conf /etc/sysctl.conf.bak${time}
cp /etc/security/limits.conf /etc/security/limits.conf.bak${time}
cp /etc/pam.d/login /etc/pam.d/login.bak${time}
cp /etc/profile /etc/profile.bak${time}
cp /home/oracle/.bash_profile /home/oracle/.bash_profile.bak${time}
cp /etc/selinux/config /etc/selinux/config.bak${time}

cp /etc/sysconfig/network /etc/sysconfig/network.bak
cp /etc/sysctl.conf /etc/sysctl.conf.bak
cp /etc/security/limits.conf /etc/security/limits.conf.bak
cp /etc/pam.d/login /etc/pam.d/login.bak
cp /etc/profile /etc/profile.bak
cp /home/oracle/.bash_profile /home/oracle/.bash_profile.bak
cp /etc/selinux/config /etc/selinux/config.bak
}

#获取当前系统信息，配置hostname,关闭selinux
sys_info()
{
#echo "$flag"
echo "check system space and version";
echo "#########################Step 2:check system space and versio#########################################"
uname -a
cat /etc/*release
df -h
hostname
ip_add=`ifconfig | grep 'inet addr:'| grep -v '127.0.0.1' |cut -d: -f2 | awk '{ print $1}'`
ip_code=`ifconfig | grep 'inet addr:'| grep -v '127.0.0.1' |cut -d: -f2 | awk '{ print $1}'|cut -d. -f4`
echo "$ip_add oraserver${ip_code}" >> /etc/hosts
sed -i '/HOSTNAME=/s/localhost.localdomain/oraserver'"${ip_code}"'/' /etc/sysconfig/network
sed -i '/SELINUX=/s/enforcing/disabled/' /etc/selinux/config
hostname oraserver${ip_code}
}

#安装需要的依赖包，，不同的系统当然定制的RPM不一样，这一步大可手工检查
rpm_info()
{
echo "#########################Step 2:install oracle rpms ###################################################"
rpm -q binutils compat-libstdc++ elfutils-libelf elfutils-libelf-devel gcc gcc-c++ glibc glibc-common glibc-devel glibc-headers ksh libaio libaio-devel libgcc libstdc++ make numactl-devel sysstat unixODBC unixODBC-devel elfutils-libelf-devel-static kernel-headers libgomp
rpm -ivh /root/rpm-centos/lrzsz-0.12.20-27.1.el6.x86_.rpm
rpm -ivh /root/rpm-centos/compat-libstdc++-33-3.2.3-69.el6.x86_.rpm
rpm -ivh /root/rpm-centos/unixODBC*
rpm -ivh /root/rpm-centos/libaio*
rpm -ivh /root/rpm-centos/numactl*
rpm -ivh /root/rpm-centos/sysstat*
rpm -ivh /root/rpm-centos/unzip-6.0-1.el6.x86_.rpm
rpm -ivh /root/rpm-centos/ksh-20100621-16.el6.x86_.rpm
rpm -ivh /root/rpm-centos/elfutils-libs-0.152-1.el6.x86_.rpm
rpm -ivh /root/rpm-centos/elfutils-libelf-devel*
echo "##########After Install essential rpms"
rpm -q binutils compat-libstdc++ elfutils-libelf elfutils-libelf-devel gcc gcc-c++ glibc glibc-common glibc-devel glibc-headers ksh libaio libaio-devel libgcc libstdc++ make numactl-devel sysstat unixODBC unixODBC-devel elfutils-libelf-devel-static kernel-headers libgomp
}

#创建oracle用户、相关目录、允许oracle以sudo来以root用户执行脚本
oracle_user()
{
echo "#########################Step 3:add oracle user and group,create directory #############################"
groupadd oinstall
groupadd dba
useradd -g oinstall -G dba -d /home/oracle -m -s /bin/bash -c "ORACLE" oracle
echo "oracle:oracle" > /root/oracle_pass
chpasswd < /root/oracle_pass
rm -rf /root/oracle_pass
id oracle;
id nobody;
echo "";
echo "##########create oracle directory"
mkdir -p /oracle;
mkdir -p /oracle/oraInventory;
chown -R oracle:oinstall /oracle;
chmod -R 775 /oracle/;
echo "##########Add Oracle to sudu user "
chmod u+w /etc/sudoers
echo "oracle ALL=(ALL) ALL" >>/etc/sudoers
chmod u-w /etc/sudoers
}