在CentOS7.0上安装Oracle11或12

一、安装前准备工作，下载

Oracle地址：http://www.oracle.com/technetwork/database/enterprise-edition/downloads/index.html
下载如下版本

下载完成后：

linux.x64_11gR2_database_1of2.ziplinux.x64_11gR2_database_2of2.zip

二、配置-增加oracle用户和相关用户组

1、切换到root用户
su - root
2、增加用户组

groupadd oinstall groupadd dbagroupadd opergroupadd asmadmin

3、增useradd -g oinstall -G dba,oper,asmadmin oracle置oracle用户和密码
passwd oracle

三、系统配置

1、修改/etc/sysctl.conf

fs.aio-max-nr = 1048576fs.file-max = 6815744kernel.shmall = 2097152kernel.shmmax = 4294967295kernel.shmmni = 4096kernel.sem = 250 32000 100 128net.ipv4.ip_local_port_range = 9000 65500net.core.rmem_default = 262144net.core.rmem_max = 4194304net.core.wmem_default = 262144net.core.wmem_max = 1048576

使其生效：/sbin/sysctl -p
2、修改/etc/security/limits.conf文件

oracle  soft    nproc   2047oracle  hard    nproc   16384oracle  soft    nofile  4096oracle  hard    nofile  65536oracle  soft    stack   10240

3、修改host

vim /etc/hosts192.168.101.31  neemotech.com   neemotech

4、修改hostname
vim /etc/hostname
修改hostname

neemotech

5、登录oracle用户，配置oracle的环境变量
su - oracle
修改当前oracle的.bash_profile配置文件，配置oracle的环境

TMP=/tmp;export TMPTMPDIR=$TMP;export TMPDIRORACLE_HOSTNAME=neemotech.com;export ORACLE_HOSTNAMEORACLE_UNQNAME=orcl;export ORACLE_UNQNAMEORACLE_BASE=/home/oracle/app/oracle;export ORACLE_BASEORACLE_HOME=$ORACLE_BASE/product/11.2.0/db_1;export ORACLE_HOMEORACLE_SID=orcl;export ORACLE_SIDPATH=/usr/sbin:$PATH;export PATHPATH=$ORACLE_HOME/bin:$PATH;export PATHLD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib;export LD_LIBRARY_PATHCLASSPATH=$ORACLE_HOME/jlib:$ORACLE_HOME/rdbms/jlib;export CLASSPATH

6,、创建安装路径并授权给oracle用户

mkdir -p /home/oracle/app/oracle/product/11.2.0/db_1chown -R oracle:oinstall /home/oraclechmod -R 775 /home/oracle

7、Disable secure linux by editing the “/etc/selinux/config” file, making sure the SELINUX flag is set as follows. It requires REBOOT to be effective !!!

vim /etc/selinux/configSELINUX=permissive

In Centos Linux 7 /tmp data is stored on tmpfs which consumes memory and is too small. To revert it back to storage just run following command and REBOOT machine to be effective.

systemctl mask tmp.mount

四、添加依赖包

1、使用官网源添加-添加oracle的yum源

 cd /etc/yum.repos.dwget http://public-yum.oracle.com/public-yum-ol6.repo

2、使用yum安装
接下来，使用 yum install 命令安装 oracle-rdbms-server-11gR2-preinstall RPM。 期间会显示了安装过程如何检查依赖关系，然后下载和安装所需软件包。

yum install oracle-rdbms-server-11gR2-preinstall

五、安装

设置DISPLAY环境变量执行runInstaller安装,再次啰嗦一下DISPLAY=IP地址是你连接Linux系统的IP地址后面加上”:0.0”

[oracle@neemotech ~]$ export DISPLAY=192.168.2.77:0.0[oracle@neemotech ~]$ cd /soft/database/     #进入安装包的解压目录[oracle@neemotech database]$ ./runInstaller  #运行

下面都是界面化安装，期间会报一些错误，参考如下几个博客就可以：
http://www.oracle.com/technetwork/cn/articles/servers-storage-admin/ginnydbinstallonlinux6-1845247-zhs.html
http://www.jianshu.com/p/2fda26a7edf1
http://popartx.com/2016/05/10/Oracle11Ginstall/
http://www.oracle.com/technetwork/database/enterprise-edition/downloads/index.html