Home / 12c / Oracle Database 12c Release 1 (12.1) Installation on Oracle Linux 7 (OL7.2)

Oracle Database 12c Release 1 (12.1) Installation on Oracle Linux 7 (OL7.2)

Note from Oracle Database 12c R1 Installation Guide:

  • Starting with Oracle Database 12c Release 1 (, Oracle Linux 7 and Red Hat Enterprise Linux 7 are supported on Linux x86-64 systems.

Supported Oracle Linux 7 distributions:

  • Oracle Linux 7 with the Unbreakable Enterprise kernel: 3.8.13-33.el7uek.x86_64 or later
  • Oracle Linux 7 with the Red Hat Compatible kernel: 3.10.0-123.el7.x86_64 or later

This means that Oracle Linux 7 only supports onwards. This installation guide should not be used for a real system when using 12c database versions prior to

Table of Contents

  1. Download Software
  2. Check hosts file, selinux and firewall
  3. Oracle Installation Prerequisites
  4. Oracle software directories
  5. Bash_profile
  6. Check your oracle user details
  7. Connect as oracle account
  8. Unzip the files.
  9. Database folder
  10. Run the installer
  11. Security updates
  12. Warning message
  13. Software updates
  14. Create and configure a database
  15. Server type
  16. Single instance DB installation
  17. Typical install
  18. Typical Install Configuration
  19. oraInventory location
  20. Typical installation summary
  21. Advanced install
  22. Oracle edition
  23. Language
  25. oraInventory location
  26. General Purpose/ OLTP
  27. Container and Pluggable Database
  28. Database details
  29. Character sets tab
  30. Sample Schemas tab
  31. Directory for database files
  32. Oracle Enterprise Manager
  33. Enable Recovery
  34. Password for sys accounts
  35. OS group for each oracle group
  36. Start Installation process
  37. 2 scripts as user root
  38. Installation progress
  39. Database Configuration Assistant
  40. Installation summary window
  41. Database Express 12C

In our previous document (Oracle Linux 7.2 Installation using VirtualBox) we covered operating system installation; it’s a prerequisite for this tutorial.

At this moment we have “fresh” installation of the Oracle Linux 7.2. System is up and running.

  1. Download Software

Download the Oracle software from OTN (Oracle Technology Network) or from edelivery

OTN: Oracle Database 12c Release 1 ( Software (64-bit)


edelivery: Oracle Database 12c Release 1 ( Software (64-bit)


  1. Check the hosts file, selinux config, and the firewall

Hosts File

The “/etc/hosts” file must contain a fully qualified name for the server.



SELinux is an access control implementation for the Linux kernel.



If the OS is to be used for an Oracle installation, it is easier if the firewall is disabled.

03 firewall

  1. Oracle Installation Prerequisites

You will need the oracle-rdbms-server-12cR1-preinstall-1.0-4.el7.x86_64 rpm to complete the basic prerequisites. You can find it on your OS installation “Package” folder or just use yum to install it (yum install oracle-rdbms-server-12cR1-preinstall -y).

04 prereq

You can install missing packages from dvd. Just mount it and install missing packages using rpm -Uvh command from directory /Packages or by using yum install command. I’m using x86_64 version of packages

05 run prereqs

Manual Setup

If you don’t have the “oracle-rdbms-server-12cR1-preinstall” package to perform all prerequisites, you will need to manually perform the following setup tasks.

Add or amend the following lines in the “/etc/sysctl.conf” file.

06 sysctl

Run the following command to change the current kernel parameters.

Add the following lines to set shell limits for user oracle in  “/etc/security/limits.conf” file.

07 limits

Add following line in the /etc/pam.d/login file, if it does not already exist

08 login

OPTIONAL: Take a Snapshot of your Virtual Machine

This will be our checkpoint on our installation guides. You can restore your VM at this snapshot at any time.

Click “Machine” menu and select “Take Snapshot…”

09 snapshot

Choose your Snapshot Name and Description

10 snapshot name

Wait for its progress

11 progress

You now have a new Snapshot for your VM

12 snapshot

  1. Create the directories in which the Oracle software will be installed.
13 mkdir

  1. Add the following lines at the end of the “/home/oracle/.bash_profile” file.
14 bash

  1. Check your oracle user details

Modify oracle user to be part of the vboxsf group so it can access our Shared folder

15 id oracle

  1. Connect as oracle account

16 oracle

  1. Unzip the files.

unzip linuxamd64_12102_database_1of2.zip

unzip linuxamd64_12102_database_2of2.zip

17 unzip

  1. Go to the Database folder and check its content

18 ll

  1. Run the installer (./runInstaller)

19 runinstall

  1. Uncheck checkbox “I wish to receive security updates via My Oracle Support” and then click “Next” button.

20 dbca

  1. Ignore following message and click “Yes” button.

21 address

  1. Skip software updates

22 software

  1. Select “Create and configure a database” then click “Next” button.

23 create db

  1. Select “Server class” and click “Next” button.

24 server class

  1. Accept default “Single instance database installation” and click “Next” button.

25 single

  1. We will look at the Typical and Advanced install option

NOTE: Let’s take a look at Typical install first

26 typical

  1. Fill the needed information on the Typical Install Configuration window

27 install

  1. Choose your oraInventory location or click Next and set it to default

28 orainventory

  1. You are now presented the Summary of the Installation for the Typical install, you can start by clicking Install.

29 summary

NOTE: We’ll go back to #17 this time and choose the Advanced install option.

  1. Select “Advanced install” to later select more options during database installation and click “Next” button.

30 advanced

  1. You can select the edition you want. Once it’s done click “Next” button.

31 EE

  1. You can select language here. Once it’s done click “Next” button.

32 language

  1. Here you should see directories for ORACLE_BASE and ORACLE_HOME for your binaries according to environmental settings. Click “Next” button.

33 install loc

  1. Accept default and click “Next” button.

34 inventory

  1. Accept default “General Purpose/ Transaction Processing” and click “Next” button.

  1. Here you define your database name. Check checkbox “Create as Container database” and enter “Pluggable database name” to add your first container CDB1 and pluggable PDB1 database and click “Next” button.

36 db id

  1. Specify more details about your database on 3 tabs where you can define memory settings, character set and if to install sample schema on your database. Once you are happy with your settings click “Next” button.

37 mem

  1. Character sets tab

38 character

  1. Sample Schemas tab

39 schema

  1. Specify directory where you want to install your database files then click “Next” button.

40 filesystem

  1. On this page you can register your database in Oracle Enterprise Manager”. Accept default settings and click “Next” button.

41 em

  1. Check checkbox “Enable Recovery” to specify directory for your recovery area “Recovery area location” and click “Next” button.

42 enable

  1. Specify password for each user or enter the same for all. Once it’s done click “Next” button.

43 pass

  1. Here you can specify OS group for each oracle group. Accept default settings and click “Next” button.

44 OS

  1. If everything is right click “Install” button. It’s the last moment to come back to each of previous point and make changes.

  1. Once binaries are installed the last step is to run 2 scripts as user root.

46 root

47 root run

  1. Installation in progress

48 install

  1. Database Configuration Assistant will start automatically and create database for you.

49 progress

  1. You should see summary window. You can update “Password Management” here. Once it’s done click “OK” button to continue. Oracle 12C installation is completed. Click “Close” button.

  1. Try to login as SYS to Enterprise manager Database express 12C

51 em express

52 em express 2

Check Also


Oracle Database 12c – How to Add / Multiplex Control Files

PURPOSE: – protect your Database in case of a disk failure – reduce the risk …

Oracle 12c: Create a Container Database (CDB) manually with CREATE DATABASE script

Note: Oracle strongly recommends using the Database Configuration Assistant (DBCA) instead of the CREATE DATABASE …

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