How to install Oracle Client step by step

How to install Oracle Client step by step

Hi friends, in this article we are going to learn how to install oracle client on Linux environment step by step.

What is Oracle client installation?

We need to install oracle client software installation to access the oracle database on the network system using TNS entry.

Software used in this article

  • VMWare 11
  • Redhat Linux 6
  • Oracle 11G
  • Oracle 11G Client

How do I manually install Oracle client?

The below steps are helpful for you to install oracle client manually.

Is Oracle client free to download?

Yes, it is free to use and download directly from the oracle website.

How do I download and install Oracle on Linux?

Using the below link you can download directly oracle client software or use OTN & e-delivery to download the software.

Download Oracle 11g Client software Click here

Unzip the Client Software

Using the below command unzip the oracle client software which is we downloaded from the oracle site.

#mkdir /u01
#unzip -d/u01

How do I download and install Oracle 11g database client?

Note: Your database server machine and client machine must be ping with each other.

In the Hosts file, you have to fully specify your hostname and your machine IP address.

#vi /etc/hosts       (hit enter then press i for insert mode then edit it)

For Example, my hostname is and my IP address is so my entry is below.

<ip address >  <full name of machine >   <short name of your machine>   ocp

Setup Kernel Parameters

Edit “/etc/sysctl.conf” file and add below parameter in end of this file.

#vi /etc/sysctl.conf

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

After that run the below command for applying changes to the sysctl file.

#/sbin/sysctl -p

Now install the required packages for configuring Oracle Client for installing these RPMs using the YUM server. If you want to know how to configure the yum server Click Here.

Now Add one user for using oracle client and grant some privileges to this user.

groupadd -g 54321 oinstall
useradd -g oinstall oracle
passwd oracle

chown -R oracle:oinstall /u01 
chmod -R 775 /u01

Disable Firewall and Selinux

Set selinux=permissive and make firewall disabled.

#vi /etc/selinux/config

Now connect with the oracle user then open .bash_profile and add the following lines at end of the file.

$vi .bash_profile

ORACLE_BASE=/u01/app/oracle; export ORACLE_BASE
ORACLE_HOME=$ORACLE_BASE/product/11.2.0/client_1; export ORACLE_HOME

Now reboot your pc and log in with Oracle user then follow the below steps.

$cd /u01/client


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