Oracle Database 11g R2 (11.2) Installation On Oracle Linux 7 (OL7)

Oracle Database 11g R2 (11.2) Installation On Oracle Linux 7 (OL7) : In this article we will discuss about the installation of Oracle Database 11g R2 (11.2) Installation On Oracle Linux 7 (OL7) 64-bit. The article is based on a server installation with a minimum of 2G swap and secure Linux set to permissive. An example of this type of Linux installation can be seen here.

Oracle Linux 7 is a production release, but the Oracle Database is only supported on it from Oracle Database 11g ( onward. This installation should not be used for a real system when using database versions prior to

  • Download Software
  • Unzip Files
  • Hosts File
  • Oracle Installation Prerequisites
    • Automatic Setup
    • Manual Setup
    • Additional Setup
  • Installation
  • Post Installation

Download Software :

Download the Oracle software from OTN or MOS depending on your support status.

OTN: Oracle Universal Installations (OUI) Silent Installations

Unzip Files :



Hosts File :

The “/etc/hosts” file must contain a fully qualified name for the server.

Example :

[root@orakldba ~]# hostname
[root@orakldba ~]#
[root@orakldba ~]# cat /etc/hosts localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 orakldba.localdomain orakldba

Oracle Installation Prerequisites :

Perform either the Automatic Setup or the Manual Setup to complete the basic prerequisites. The Additional Setup is required for all installations.

Automatic Setup:

commands must run on root user.

yum search preinstall

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

It is probably worth doing a full update as well, but this is not strictly speaking necessary.

yum update -y

Manual Setup:

If you have not used the “oracle-rdbms-server-11gR2-preinstall” package to perform all prerequisites, you will need to manually perform the following setup tasks.

Added the following lines to the /etc/sysctl.conf file.

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

Then run this following commands on root user :

/sbin/sysctl -p

Add the following lines to this file “/etc/security/limits.conf”.

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

Add the following line to the “/etc/pam.d/login” file, if it does not already exist.

session required

The following packages are listed as required, including the 32-bit version of some of the packages. Many of the packages should be installed already.

yum install binutils -y
yum install compat-libstdc++-33 -y
yum install compat-libstdc++-33.i686 -y
yum install gcc -y
yum install gcc-c++ -y
yum install glibc -y
yum install glibc.i686 -y
yum install glibc-devel -y
yum install glibc-devel.i686 -y
yum install ksh -y
yum install libgcc -y
yum install libgcc.i686 -y
yum install libstdc++ -y
yum install libstdc++.i686 -y
yum install libstdc++-devel -y
yum install libstdc++-devel.i686 -y
yum install libaio -y
yum install libaio.i686 -y
yum install libaio-devel -y
yum install libaio-devel.i686 -y
yum install libXext -y
yum install libXext.i686 -y
yum install libXtst -y
yum install libXtst.i686 -y
yum install libX11 -y
yum install libX11.i686 -y
yum install libXau -y
yum install libXau.i686 -y
yum install libxcb -y
yum install libxcb.i686 -y
yum install libXi -y
yum install libXi.i686 -y
yum install make -y
yum install sysstat -y
yum install unixODBC -y
yum install unixODBC-devel -y
yum install zlib-devel -y
yum install elfutils-libelf-devel -y

Create the new groups and users.

groupadd -g 54321 oinstall
groupadd -g 54322 dba
groupadd -g 54323 oper

useradd -u 54321 -g oinstall -G dba,oper oracle

Set the password for the “oracle” user.

passwd oracle

Additional Setup:

The following steps must be performed, whether you did the manual or automatic setup.

Set secure Linux to disabled by editing the “/etc/selinux/config” file.


Once the change is complete, restart the server or run the following command as ‘root’ user.

setenforce Permissive

If you have the Linux firewall enabled, you will need to stop and disable it.

run this following commands on root user :

systemctl stop firewalld

systemctl disable firewalld

Create the directories in which the Oracle software will be installed.

mkdir -p /u01/app/oracle/product/
chown -R oracle:oinstall /u01
chmod -R 775 /u01

Unless you are working from the console, or using SSH tunnelling, login as root and issue the following command.

xhost + <machine-name>

Add the following lines at the end of the “/home/oracle/.bash_profile” file.

# Oracle Settings
export TMP=/tmp;
export TMPDIR=$TMP;
export ORACLE_HOSTNAME=orakldba.localdomain;
export ORACLE_BASE=/u01/app/oracle;
export ORACLE_HOME=$ORACLE_BASE/product/;
export ORACLE_TERM=xterm;
export PATH=/usr/sbin:$PATH;
export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib;

After settings done on .bash_profile run :

[oracle@orakldba ~]$
[oracle@orakldba ~]$ . ./.bash_profile
[oracle@orakldba ~]$


Log into the oracle user. If you are using X emulation then set the DISPLAY environmental variable.

DISPLAY=<machine-name>:0.0; export DISPLAY

Start the Oracle Universal Installer (OUI) by issuing the following command in the database directory.

[oracle@orakldba database]$ ./runInstaller
Starting Oracle Universal Installer…
Checking Temp space: must be greater than 120 MB. Actual 4290 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/OraInstall2020-08-13_07-48-45PM. Please wait …[oracle@orakldba database]$ You can find the log of this install session at:

Proceed with the installation of your choice:

Configure Security Updates:

Software Update Options :

Installation Options :

System Class :

Installation Options :

Install Type :

Install Configuration :

Create Inventory :

Prerequisite Checks :

Summary :

Install Product :

Database Configuration Assistant Start :

Database Configuration Assistant Finish :

Script Execution Step :

Execute this two scripts login as root user :




Post Installation :

Edit the “/etc/oratab” file setting the restart flag for each instance to ‘Y’.


After completed installation check database status:

I hope my written content will helped you. Your suggestions/feedback are most welcome from
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