Oracle 11g R2 linux Installation |iWiKi on Oracle

Step By Step Guide to Oracle 11g R2 Database Installation on RHEL 5

1. Download the Oracle 11g R2 from the below Link.

http://www.oracle.com/technetwork/database/enterprise-edition/downloads/index.html

2. Open Terminal Window

3. Login as SuperUser using ‘su’ command.

Make Network Configuration

Check you hostname and IP is on /etc/hosts

Get your hostname: hostname

Get your IP:

/sbin/ifconfig

You will Find your Ip under the Output “lo” Section.

Check if Hostname and IP are already inserted into the Enabled Hosts File.

cat /etc/hosts

If It’s Not Present then Insert it!

nano /etc/hosts

Insert:

Example: ’127.0.0.1 localhost.localdomain localhost’

Ctrl+x to Save and Exit from nano Editor :)

Add you Host IP to the List of Hosts Granted of Connection with the X Server

xhost +<b><yourip></yourip></b>

Example: #xhost +127.0.0.1

5. If You Do Not Dispose of RHEL Subscription

How-to Setup YUM

Detailed Instructions for How-to Setup YUM for Un-subscribed RHEL Users.

Install dependencies
Add Groups and User

groupadd -g 502 oinstall

groupadd -g 503 dba

groupadd -g 504 oper

groupadd -g 505 asmadmin

useradd -u 502 -g oinstall -G dba,asmadmin,oper -s /bin/bash -m oracle
passwd oracle

Create the directories where Oracle will be installed and give right ownership and permission

mkdir -p /u01/app/oracle/product/11.2.0/dbhome_1

chown -R oracle:oinstall /u01

chmod -R 775 /u01

Set Kernel’s Parameters

nano /etc/sysctl.conf

Add or amend the following lines in the /etc/sysctl.conf file.
#### Oracle 11g Kernel Parameters ####
fs.suid_dumpable = 1
fs.aio-max-nr = 1048576
fs.file-max = 6815744
kernel.shmall = 2097152
kernel.shmmax = 536870912
kernel.shmmni = 4096
# semaphores: semmsl, semmns, semopm, semmni
kernel.sem = 250 32000 100 128
net.ipv4.ip_local_port_range = 9000 65500
net.core.rmem_default=4194304
net.core.rmem_max=4194304
net.core.wmem_default=262144
net.core.wmem_max=1048586
Comment out these lines below than give an error
#net.bridge.bridge-nf-call-ip6tables = 0
#net.bridge.bridge-nf-call-iptables = 0
#net.bridge.bridge-nf-call-arptables = 0

nano /etc/security/limits.conf

Add the following lines to the /etc/security/limits.conf file.
#### oracle User Settings 4 Oracle 11g ####
oracle soft nproc 2047
oracle hard nproc 16384
oracle soft nofile 1024
oracle hard nofile 65536
oracle soft stack 10240

nano /etc/selinux/config

Disable Secure Linux by editing the /etc/selinux/config file, making sure the SELINUX flag is set as follows.

SELINUX=disabled<br>

Run the following command to Load the New Kernel Parameters.

/sbin/sysctl -p

Unzip the Oracle 11g Database, Set oracle as Owner and Move it into the oracle’s Home

cd </path/2>

unzip linux_11gR2_database_1of2.zip

unzip linux_11gR2_database_2of2.zip

chown -R oracle:oinstall database

mv database /home/oracle

Add Paths to oracle’s .bashrc
Login as Oracle

su oracle

Edit .bashrc file

nano /home/oracle/.bashrc

Insert:
# Oracle Settings
TMP=/tmp; export TMP
TMPDIR=$TMP; export TMPDIR
ORACLE_HOSTNAME=myHOSTNAME; export ORACLE_HOSTNAME
ORACLE_UNQNAME=DB11G; export ORACLE_UNQNAME
ORACLE_BASE=/u01/app/oracle; export ORACLE_BASE
ORACLE_HOME=$ORACLE_BASE/product/11.2.0/dbhome_1; export ORACLE_HOME
ORACLE_SID=dbSID; export ORACLE_SID
PATH=/usr/sbin:$PATH; export PATH
PATH=$ORACLE_HOME/bin:$PATH; export PATH
LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib; export LD_LIBRARY_PATH
CLASSPATH=$ORACLE_HOME/jlib:$ORACLE_HOME/rdbms/jlib; export CLASSPATH
Substitute HOSTNAME and DBSID with the Values you Will Use During Software Installation
In this Example Respectively:

HOSTNAME = 127.0.0.1
DBSID = SID

Load New .bashrc Settings

source ~/.bashrc

Latest and Optional to Add Cross-Shell Compatibility edit also oracle’s .bash_profile

nano ~/.bash_profile

Add as Latest Entry the Line

source ~/.bashrc

Install the Oracle 11g Software

cd /home/oracle/database

./runInstaller

On the first screen If you Do Not Dispose of an Oracle Subscription Just Leave Blank eMail and Un-Check the Demand of Security Update Support then Click on Next