rhel 6下安装oracle 11g R2
的开发包都安装上，或者快速安装后搭建本地yum源再利用群组安装也可。值得注意的是
swap要求至少3G，我的机器为2G物理内存。
安装过程分为两步，一是修改系统参数，二是软件及数据库安装。
修改系统参数
step1: vi /etc/sysctl.conf, 添加如下参数:
fs.aio-max-nr = 1048576
fs.file-max = 6815744
kernel.shmall = 2097152
kernel.shmmax = 1073741824
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
保存并使之生效
/sbin/sysctl -p
如果有如下提示错误，忽略，因为即使未修改参数也提示有这个错误
error: “net.bridge.bridge-nf-call-ip6tables” is an unknown key
error: “net.bridge.bridge-nf-call-iptables” is an unknown key
error: “net.bridge.bridge-nf-call-arptables” is an unknown key
注意: kernel.shmmax’s 的值是物理内存的一半。 我的是2G内存，所以是1073741824
step2: vi /etc/security/limits.conf,添加:
oracle soft nproc 2047
oracle hard nproc 16384
oracle soft nofile 1024
oracle hard nofile 65536
step3: vi /etc/pam.d/login,添加参数:
session required pam_limits.so step4:vi /etc/profile:
if [ $USER = "oracle" ]; then
if [ $SHELL = "/bin/ksh" ]; then
ulimit -p 16384
ulimit -n 65536
else
ulimit -u 16384 -n 65536
fi
fi
step4: vi /etc/csh.login:
if( $USER == “oracle” ) then
limit maxproc 16384
limit descriptors 65536
umask 022
endif
step5: vi /etc/redhat-release,修改为如下值，成功安装数据库后在修改回来:
Red Hat Enterprise Linux Server release 5.0 (Tikanga)
step6: 添加相关用户及用户组:
/usr/sbin/groupadd oinstall
/usr/sbin/groupadd dba
/usr/sbin/useradd -m -g oinstall -G dba oracle
echo “oracle”|passwd –stdin oracle （我比较懒，管道命令修改oracle密码）
Step 6: 创建安装路径及修改权限:
mkdir -p /opt/11g/oracle
chown -R oracle:oinstall /opt/11g/oracle
chmod -R 775 /opt/11g/oracle
mkdir -p /opt/11g/oraInventory
chown -R oracle:oinstall /opt/11g/oraInventory
chmod -R 775 /opt/11g/oraInventory
Step 7: vi /home/oracle/.bash_profile, 其中ORACLE_SID的值可以自己定，我的设为orcl
TMP=/tmp; export TMP
ORACLE_BASE=/opt/11g/oracle; export ORACLE_BASE
ORACLE_HOME=$ORACLE_BASE/product/11.2.0/dbhome_1; export ORACLE_HOME
ORACLE_SID=orcl; export ORACLE_SID
ORACLE_TERM=xterm; export ORACLE_TERM
PATH=$ORACLE_HOME/bin:/usr/sbin:$PATH; export PATH LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib;
export LD_LIBRARY_PATH
CLASSPATH=$ORACLE_HOME/JRE:$ORACLE_HOME/jlib:$ORACLE_HOME/rdbms/jlib;
export CLASSPATH
if [ $USER = "oracle" ]; then
if [ $SHELL = "/bin/ksh" ]; then
ulimit -p 16384
ulimit -n 65536
else
ulimit -u 16384 -n 65536
fi
fi
umask 022
使环境变量生效：
source ~/.bash_profile
新开命令行窗口切换到root 执行xhost localhost
step 8：切换到oracle解压11G的安装包，这样就不用再修改权限了。
step 9: 重启后以oracle登录安装。
以下是安装过程
[oracle@localhost database]$ ./runInstaller
Starting Oracle Universal Installer…
Checking Temp space: must be greater than 120 MB. Actual 8288 MB Passed
Checking swap space: must be greater than 150 MB. Actual 4095 MB Passed
Checking monitor: must be configured to display at least 256 colors. Actual 16777216 Passed
Preparing to launch Oracle Universal Installer from /tmp/OraInstall2011-04-28_07-44-59AM.
Please wait …[oracle@localhost database]$ You can find the log of this install session at:
/opt/11g/oraInventory/logs/installActions2011-04-28_07-44-59AM.log
出现图形界面后选择默认即可。当检查依赖包是可能会出现如下下提示
如果这些包都安装了，版本比较新，也可能会出现这样的提示。忽略它继续安装即
可。下图为安装ORACLE软件：
创建数据库：
可以在上面解锁一些帐号和修改密码，点击上面的OK后，出现如下：
切换到root，命令完成最后安装。
[oracle@localhost ~]$ su -
Password:
[root@localhost 11g]# sh /opt/11g/oraInventory/orainstRoot.sh
Changing permissions of /opt/11g/oraInventory.
Adding read,write permissions for group.
Removing read,write,execute permissions for world.
Changing groupname of /opt/11g/oraInventory to oinstall.
The execution of the script is complete.
[root@localhost 11g]# sh /opt/11g/oracle/product/11.2.0/dbhome_1/root.sh
Running Oracle 11g root.sh script…
The following environment variables are set as:
ORACLE_OWNER= oracle
ORACLE_HOME= /opt/11g/oracle/product/11.2.0/dbhome_1
Enter the full pathname of the local bin directory: [/usr/local/bin]:
Copying dbhome to /usr/local/bin …
Copying oraenv to /usr/local/bin …
Copying coraenv to /usr/local/bin …
Creating /etc/oratab file…
Entries will be added to the /etc/oratab file as needed by Database Configuration Assistant when a database is created
Finished running generic part of root.sh script.
Now product-specific root actions will be performed.
Finished product-specific root actions.
[root@localhost 11g]#
附：如果曾经安装过得话，提示框会和上面不太一样，只要你
sh /opt/11g/oraInventory/orainstRoot.sh即可。
登陆OEM浏览器查看：
注意，此时数据库并没有设置为随机启动，在windows下是以服务方式随机启动的。手动方
式如下：
启动监听程序：lsnrctl start
启动OEM：emctl start dbconsole
本文链接地址: rhel 6下安装oracle 11g R2
原文链接： http://blog.csdn.net/vince6799/article/details/6724225