Install Oracle 12c Client On Centos 7

Melek Durdu

3 years ago

In today’s article, I will explain how to install Oracle 12c Client on Centos 7.

We do the following package installations.

sudo yum install wget -y
wget http://mirror.centos.org/centos/7/os/x86_64/Packages/libaio-devel-0.3.109-13.el7.x86_64.rpm
yum install libaio-devel-0.3.109–13.el7.x86_64.rpm -y

sudo yum install wget -y

wget http://mirror.centos.org/centos/7/os/x86_64/Packages/libaio-devel-0.3.109-13.el7.x86_64.rpm

yum install libaio-devel-0.3.109–13.el7.x86_64.rpm -y

We create the Oracle user.

passwd oracle

1	passwd oracle

We check the “/etc/selinux/config” file and check if SELINUX is as follows.

SELINUX=permissive

1	SELINUX=permissive

After completing the above process, we reboot the machine and run the following command.

setenforce Permissive

1	setenforce Permissive

We disable the firewall.

systemctl stop firewalld
systemctl disable firewalld

1 2	systemctl stop firewalld systemctl disable firewalld

We create the directories where the oracle client will be installed and grant the oracle user the necessary privileges.

mkdir -p /u01/app/oracle/product/12.1.0/client_1
chown -R oracle:oinstall /u01
chmod -R 775 /u01

mkdir -p /u01/app/oracle/product/12.1.0/client_1

chown -R oracle:oinstall /u01

chmod -R 775 /u01

We log in as root and enter the following command.

xhost +<machine-name>

1	xhost +<machine-name>

We set the following information into the .bash_profile.

# Oracle Settings
export ORACLE_BASE=/u01/app/oracle
export ORACLE_HOME=$ORACLE_BASE/product/client/11.2.0/client_1
export PATH=/usr/sbin:/usr/local/bin:$PATH
export PATH=$ORACLE_HOME/bin:$PATH
export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib

# Oracle Settings

export ORACLE_BASE=/u01/app/oracle

export ORACLE_HOME=$ORACLE_BASE/product/client/11.2.0/client_1

export PATH=/usr/sbin:/usr/local/bin:$PATH

export PATH=$ORACLE_HOME/bin:$PATH

export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib

After changing the content of the .bash_profile, we run the following command.

. .bash_profile

1	. .bash_profile

We login to the Oracle user and set the DISPLAY variable.

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

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

We go to the $ORACLE_HOME directory and unzip the downloaded Oracle client software. After the unzip process is finished, we run the ./runInstaller command and start the software.

cd $ORACLE_HOME
unzip -oq /path/to/software/V46097–01.zip
./runInstaller

cd $ORACLE_HOME

unzip -oq /path/to/software/V46097–01.zip

./runInstaller

After the installation starts, we will see the following screen. We select the Administrator option and continue.

We choose the language and continue.

Since we defined .bash_profile directories before, directories come by default. We continue unaltered.

The directory will come by default. We continue unaltered.

The summary section contains information about the client. We start the installation by clicking Install.

While the installation is in progress, when the following screen comes up, we copy the command and run it in the root user.

/u01/app/oraInventory/orainstRoot.sh

1	/u01/app/oraInventory/orainstRoot.sh

After successfully completing the Oracle Client installation, we click the Close button and close it.

After the installation is finished, we create the tnsnames.ora file. Its content should be as follows.

$ORACLE_HOME/network/admin/tnsnames.ora

1	$ORACLE_HOME/network/admin/tnsnames.ora

orcl =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.56.2)(PORT = 1521))
(CONNECT_DATA =
(SERVER = DEDICATED)
(SERVICE_NAME = orcl)
) )

orcl =

(DESCRIPTION =

(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.56.2)(PORT = 1521))

(CONNECT_DATA =

(SERVER = DEDICATED)

(SERVICE_NAME = orcl)

) )

After completing all the operations, we connect to the database with the following sqlplus command.

sqlplus <user>/<password>@<SID>

1	sqlplus <user>/<password>@<SID>