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

In this post i’m going to demonstrate 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 required. 

STEP-1.
Download ORACLE 12c R1 software form www.oracle.com accept OTN License Agreement, it’s download in two parts and it’s zip file.
After downloading software unzip file using the following command.

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

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

STEP-2.

Now edit Hosts file, it’s contain IP Address & Hostname of machine using following command.
set host name using below command

#vi /etc/hostname

ol7.localdomain
 
# vi /etc/hosts

<machine IP address>  <hostname>  <nick name>

After editing hosts file it’ll be lock like this

127.0.0.1   localhost localhost.localdomain localhost4 
192.168.1.105    ol7.localdomain    oracle

STEP-3.

we have two Installation methods

1. Automatic
2. Manual

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

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

this command is set automatically all requirement settings.

STEP-4.

2. Manual setup: 

Add bellow lines in “/etc/sysctl.conf” file using below command.

# vi /etc/sysctl.conf (open this file and past bellow parameters in end of this file).

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 below command for applying changes.

# /sbin/sysctl -p

STEP-5.

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

STEP-6.

Now install Linux packages which is 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. May be some packages are already install.

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

STEP-7.

Now create some groups and user, using following commands.

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

Add ORACLE user.

# useradd -u 54321 -g oinstall -G dba,oper oracle
set the password for ORACLE user using following command.

# passwd oracle

STEP-8.

Change SELINUX mode using below command.

# vi /etc/selinux/config

SELINUX=permissive

And firewall must be disabled, using bellow command.

# systemctl disable firewalld

STEP-9.

Now create some appropriate Directories where is ORACLE software will be install, and giving privileges, using bellow command.

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

STEP-10.

Now switch in ORACLE user and add bellow lines in end of file, using bellow command.

# su – oracle

$ 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:$PATH
export PATH=$ORACLE_HOME/bin:$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
  else
    ulimit -u 16384 -n 65536
  fi
fi

After saving this file, exit from ORACLE user and Restart your pc.

# reboot

STEP-11.

Now login with ORACLE user and start runInstaller using bellow command.

$ cd /u01/database

$ ./runInstaller

Then follow graphically instructions then Enjoy.