Installing Oracle 11g on Cloud (EC2 instance RHEL/Centos 6.x) through command line

23 / Dec / 2013 by ankush 3 comments

You may find many blogs on internet providing step-by-step guidelines to install Oracle 11g on RHEL/Centos 6.x but what’s different here is, I would be discussing the installation of Oracle 11g on AWS EC2 instance through CLI in cases where you do not have access to physical system. I believe the best example to showcase this environment would be that of AWS Cloud.
Without wasting any time lets jump down to the point & discuss further steps.

We use “oracle-rdbms-server-11gR2-preinstall” package offered by “Oracle Public Yum” repository.

# cd /etc/yum.repos.d
# wget

Install GPG key for your OS release

# wget -O /etc/pki/rpm-gpg/RPM-GPG-KEY-oracle

Now install the package

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

Setup your hostname

# vi /etc/sysconfig/network

Make an entry for fully qualified hostname in /etc/hosts file

# vi /etc/hosts oracle

where, is the Elastic IP of your Oracle Instance

Restart your network for the changes to take effect.

# /etc/init.d/network restart

Create a User oracle & specify a password for it.

# useradd oracle
# passwd oracle

Make the following entries in /etc/security/limits.d/90-nproc.conf

Comment out

* softnproc 1024

Add below entry

* - nproc 16384

Disable SELinux on your instance

# vi /etc/selinux/config

Reboot for changes to take effect

# reboot

Now login as oracle user & make below entry in your .bash_profile

# su - oracle

$ vi .bash_profile

# Oracle Settings
 TMP=/tmp; export TMP
 ORACLE_BASE=/u01/app/oracle; export ORACLE_BASE
 ORACLE_HOME=$ORACLE_BASE/product/11.2.0/dbhome_1; export ORACLE_HOME
 PATH=/usr/sbin:$PATH; export PATH


Create the directories and set the appropriate permissions in which the Oracle software will be installed.

# mkdir -p /u01/app/oracle/product/11.2.0/dbhome_2
 # chown -R oracle:oinstall /u01
 # chmod -R 775 /u01

Download Oracle Software
For Linux x86-64 Systems

# wget
# wget
# su - oracle
$ unzip
$ unzip

On unzipping the files a database directory will get created. Run the runInstaller script placed under database directory.

$ cd database
$ ./runInstaller

On running the script you will receive errors for swap space & most importantly errors responding to setting up of DISPLAY Parameter as indicated below.

Starting Oracle Universal Installer...
 Checking Temp space: must be greater than 120 MB. Actual 7113 MB Passed
 Checking swap space: must be greater than 150 MB. Actual 1011 MB Passed
 Checking monitor: must be configured to display at least 256 colors
 >>> Could not execute auto check for display colors using command /usr/bin/xdpyinfo. Check if the DISPLAY variable is set. Failed <<<<
 Some requirement checks failed. You must fulfill these requirements before continuing with the installation,
 Continue? (y/n) [n]

Note : As per the above error logs swap space check is passed as I have already created one using mkswapcommand on one of the unused partition or spare volume. By default when we setup a new server instance in cloud the swap space is not present, you can check the same via free –k command.

Since Oracle requires a GUI environment for installation we need to provide the same externally.

You need to install “Xming”or any of the X environment display tools on your local Windows PC, the installation process might be pretty slow in this case might be slow as your cloud server & your local PC are in different networks. In order to speed up the installation process you can install Xming on the Windows server instance which is in the same network as your Linux server, what I mean by this is that both the Linux & Windows server should be present in the Cloud within the same VPC.

Download Xming from

Installation steps & enabling X11 forwarding

Download Additional fonts for Xming from download link :

After downloading walk down through the following steps for installation

Now start the Xming server by clicking on the Desktop icon.

Enable X11Forwarding yes” in /etc/ssh/sshd_config & restart the ssh service.
Configure X11 Forwarding in SSH Clients
In the PuTTY configuration window, select “Connection->SSH->X11” and make sure the “Enable X11″ forwarding box is checked, then return to the Session category and click [Open] when you are ready to connect to the specified machine:

Once you login with your pem file as ubuntu or ec2-user type below command.

$ xauth list
 $ MIT-MAGIC-COOKIE-1 8ea792a81074c62518d53789faf9558d

Now login as oracle user.

$ su – oracle
 $ xauth add MIT-MAGIC-COOKIE-1 8ea792a81074c62518d53789faf9558d

Now go to the unzipped database directory & run runInstallerscript.

$ cd database
$ ./runInstaller

Note :Now the runInstaller script will make use of your local Windows PC for the DISPLAY_PARAMETER error faced earlier for enabling the 256 colors required for launching the oracle GUI for installation.

Press “Continue” for resuming the Oracle installation

Click Yes to continue installation

Click Yes to continue installation.

The pdksh package is not available in Oracle repository due to which you need to download and install it manually.

# wget

During pdksh package installation you may encounter conflict error of ksh package. Remove ksh package forcefully and install the pdksh package with given below command:-

# rpm -e ksh-20100621-19.el6_4.4.i686 --nodeps
# rpm -ivh pdksh-5.2.14-2.i386.rpm

In case you face any more errors you can Check“Ignore All” checkbox& install the mentioned packages externally if required.

Click on Password Management

Set password for user “SYS”& click “OK” to continue.

Run the following configuration scripts

 # cd /u01/app/oraInventory

# ./

Changing permissions of /u01/app/oraInventory.
Adding read,write permissions for group.
Removing read,write,execute permissions for world.

Changing groupname of /u01/app/oraInventory to oinstall.
The execution of the script is complete.

# cd /u01/app/oracle/product/11.2.0/dbhome_2/
# ./

Running Oracle 11g script…

The following environment variables are set as:

ORACLE_HOME= /u01/app/oracle/product/11.2.0/dbhome_2

Enter the full pathname of the local bin directory:

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 script.

Now product-specific root actions will be performed.

Finished product-specific root actions.

Installation of Oracle database is Successful;

<a href=””><img class=”alignnone size-full wp-image-11293″ title=”15″ src=”” alt=”” width=”402″ height=”251″ /></a>

In order to check whether oracle is installed login as oracle user.

$ export ORACLE_SID=orcl

$ sqlplus / as sysdba
 SQL*Plus: Release Production on Tue Dec 24 01:37:49 2013

Copyright (c) 1982, 2009, Oracle. All rights reserved.
 Connected to:
 Oracle Database 11g Enterprise Edition Release - 64bit Production
 With the Partitioning, OLAP, Data Mining and Real Application Testing options


This completes the installation. Enjoy!!!!!

Hopefully the above mechanism will work on other Cloud environments as well.

Work Hard…..Party Harder…………!!!!!!!


comments (3)

  1. Ram

    Thanks for the good tutorial, now how do we connect from sqldeveloper? I am trying to connect but it throws ” Network adaptor could not establish

  2. keerti

    I am not able to download unzip files, giving me an error “unzip: cannot find zipfile directory in one of or, and cannot find, period.”

    Could you please help me with that.


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