一、主机名修改

vi /etc/sysconfig/network

NETWORKING=yes
HOSTNAME=centos

[oracle@centos ~]$ vi /etc/hosts
127.0.0.1 centos centos
127.0.0.1 localhost.localdomain localhost
127.0.0.1 localhost4.localdomain4 localhost4

::1 centos centos
::1 localhost.localdomain localhost
::1 localhost6.localdomain6 localhost6

二、修改系统标识

vi /etc/redhat-release

redhat-6

三、准备用户和组

groupadd oinstall

groupadd dba

useradd -g oinstall -G dba oracle

上传oracle安装包到/home/oracle并解压到database目录

四、创建oracle安装目录：

mkdir -p /app/oracle/product/11.2.0/db_1

chown -R oracle:oinstall /app
chmod -R 755 /app/oracle
chown -R oracle:oinstall /home/oracle

五、设置环境变量
su oracle
vi .bash_profile

注意一定也不要错：

删除上面的最后两行PATH和export，然后添加一下内容保存：

export EDITOR=vi

export ORACLE_BASE=/app/oracle

export ORACLE_HOME=$ORACLE_BASE/product/11.2.0/db_1

export PATH=ORACLE_HOME/bin

export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib:/usr/local/lib

export CLASSPATH=ORACLE_HOME/jlib:$ORACLE_HOME/rdbms/jlib

umask 022

生效环境变量：source /home/oracle/.bash_profile

Sync后重新启动机器：reboot

六、修改用户限制

vi /etc/security/limits.conf

在文件末尾添加：
oracle soft nproc 2047
oracle hard nproc 16384
oracle soft nofile 1024
oracle hard nofile 65536
oracle soft stack 10240

七、修改内核参数：

vi /etc/sysctl.conf

添加

fs.aio-max-nr = 1048576

fs.file-max = 6815744

kernel.shmall = 2097152

kernel.shmmax = 1073741824

kernel.shmmni = 4096

kernel.sem = 250 32000 100 128

kernel.panic_on_oops = 1

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

使参数生效：sysctl -p

八、创建交换分区

dd if=/dev/zero of=/swapfile bs=1024k count=4096

mkswap /swapfile

swapon /swapfile

vi /etc/fstab

/swapfile swap swap defaults 0 0

九、关于xhost + 的问题：

1、yum whatprovides "*/xhost"

yum -y install xorg-x11-server-utils-7.7-14.el6.x86_64

2、安装vncserver :

yum -y install tigervnc-server-1.1.0-24.el6.x86_64

vncserver

输出以下日志

You will require a password to access your desktops.
Password:
Verify:
xauth: file /root/.Xauthority does not exist

New 'centos:1 (root)' desktop is centos:1

xhost +

输出以下日志
access control disabled, clients can connect from any host

退出用oracle登录，xclock成功

十、安装依赖
yum install libaio glibc compat-libstdc++-33 elfutils-libelf-devel libaio-devel libstdc++ unixODBC unixODBC-devel ksh

十一、进入database目录运行 ./runInstaller
期间如果有相应库依赖检查不通过的话，直接忽略就好

十二、设置oracle sid
export ORACLE_SID=ora10g

十三、netca修改网络连接配置

十四、关于12512错误
在lisntener.ora中添加以下内容，重启lsnrctl stop, lsnrctl start

SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME = orcl)
(SID_NAME = orcl)
)
)