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How to Install ORACLE 12c R1 on ORACLE Linux 7 step by step

In this post, I’m going to demonstrate to you how to install ORACLE 12c Release 1 (12.1) on ORACLE LINUX-7 64 bit step by step. For ORACLE 12c  installation minimum 2GB swap is required.

Download ORACLE 12c R1 software from www.oracle.com accept OTN License Agreement, it’s downloaded in two parts and it’s a zip file.

Start Oracle Installation

After downloading software unzip the file using the following command.

# mkdir /u01
# unzip linuxamd64_12102_database_1of2 -d/u01
# unzip linuxamd64_12102_database_2of2 -d/u01

After unzipping these zip files now you have a single folder name is “database” which is containing the installation file.

Now edit the Hosts file, it contains the IP Address & Hostname of the machine using the following command. Set hostname using the below command.

Update hostname

#vi /etc/hostname   localhost localhost.localdomain localhost4 localhost4.localdomain4    ol7.localdomain    oracle

We have two methods of Oracle 12c Installation

  1. Automatic
  2. Manual

1. Automatic Setup

For automatic installation run the below command but before running the below command you must have to configure YUM Server.

# yum install oracle-rdbms-server-12cR1-preinstall -y

This command is set automatically all required settings.

2. Manual Setup

In this article, we are going to follow the Manual method of oracle 12 installations. Add bellow lines in the “/etc/sysctl.conf” file using the below command.

# vi /etc/sysctl.conf

fs.file-max = 6815744
kernel.sem = 250 32000 100 128
kernel.shmmni = 4096
kernel.shmall = 1073741824
kernel.shmmax = 4398046511104
net.core.rmem_default = 262144
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max = 1048576
fs.aio-max-nr = 1048576
net.ipv4.ip_local_port_range = 9000 65500

Save changes using press Esc then Shift+: then wq then hit Enter. After saving these changes, run the below command for applying changes.

# /sbin/sysctl -p

Add bellow line in ‘/etc/security/limits.conf’ using bellow command.

#vi /etc/security/limits.conf

oracle   soft   nofile    1024
oracle   hard   nofile    65536
oracle   soft   nproc    2047
oracle   hard   nproc    16384
oracle   soft   stack    10240
oracle   hard   stack    32768

Install Required RPMs

Now install Linux packages which are required for ORACLE installation, following bellow command, here we are installing .rpm file using YUM server, for YUM server configuration please visit on my website and to through it. Maybe some packages are already installed.

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 zlib-devel.i686 -y

Create Oracle user and Groups

Now create some groups and users, using the following commands.

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 ORACLE user using the following command.

passwd oracle

Set SELinux = permissive using the below command, and the firewall must be disabled, using the below command.

# vi /etc/selinux/config


--Disable firewall
# systemctl disable firewalld

Create some appropriate Directories where is ORACLE software will be installed, and give privileges, using the bellow command.

mkdir -p /u01/app/oracle/product/12.1.0/dbhome_1
chown -R oracle:oinstall /u01
chmod -R 775 /u01

Update .bash_profile

Login as an Oracle user and update .bash_profile as below.

#vi .bash_profile

# Oracle installation Settings
export TMP=/tmp
export TMPDIR=$TMP

export ORACLE_HOSTNAME=ol7.localdomain
export ORACLE_UNQNAME=cdb1
export ORACLE_BASE=/u01/app/oracle
export ORACLE_HOME=$ORACLE_BASE/product/12.1.0/dbhome_1
export ORACLE_SID=cdb1

export PATH=/usr/sbin:$PATH

export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib
export CLASSPATH=$ORACLE_HOME/jlib:$ORACLE_HOME/rdbms/jlib

if [ $USER = "oracle" ]; then
  if [ $SHELL = "/bin/ksh" ]; then
    ulimit -p 16384
    ulimit -n 65536
    ulimit -u 16384 -n 65536

After saving this file start runInstaller using the bellow command.

$ cd /u01/database
$ ./runInstaller

For more details, watch the above video, If you found this article informative feel free to write it in the comment box.

Read – How to Restore RMAN Backup with a Different Database Name

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