How to Install Oracle Enterprise Linux (OEL 7) on VirtualBox

Step by Step How to Install Oracle Enterprise Linux (OEL 7) on Virtual Box

Installing Oracle Enterprise Linux 7 for Oracle RAC Installation

Click here To know how to download Software

Click here To know more about how to create a Virtual Machine Using Oracle Virtual Box

Step1: Create and Configure Virtual Machine

Create and Configure your virtual machine following the steps described in how-to-create-new-virtual-machine-with. Check Step 9 in this post to select the Installation Source ISO Image and then Power On your virtual machine to boot it from OEL7 iso Image

Step2:Just wait for the Next Screen

Step3:Click Continue

Step4: Customize the Installation

This is the Screen where you can choose and customize various Options / Packages before you proceed for the Installation

Step5: Select appropriate region and time

Click on LOCALIZATION and select appropriate Region , City, Time Format and Date and click done

Step6: Configuring partitions

On this Screen select "I will configure partitioning " and click done

Step7: Creating Partitions

Create following partitions

/ 15 GB

/boot 1 GB

/swap 5 GB

/tmp 5 GB

/u01 25 GB

Click done once you are happy with the required partitions. You can customize partitions according to your requirements and available space

Step8: Finalizing Partition Creation

Click Accept changes to proceed further

Step9: Networking Configuration

On this page configure IP addresses for available NIC.

Note:-Since I will use this Server for Oracle RAC Installation I have 2 NIC. Eth0 (enp0s3) I will use for public Network and eth1 (enp0s8) I will use for private interconnect

Select the NIC Card you want to configure and click configure
On General Tab ensure "Automatically connect to this Network when it is available " is checked.
"All user may connect to this Network " is checked
Go to tab IPV4 Settings. Click add and enter desired IP address and net mask. In my case it is 192.9.1.100 and Mask is 255.255.255.0
Leave the DNS Server and Search Domain Field empty
Go to IPV6 Settings tab and choose ignore from the drop down list
Click Save.

Step10: Configuring 2nd NIC

Select the 2nd NIC and configure it for Private Interconnect similarly as described in step 9 and click save

I am using IP 10.0.0.1 and Net mask 255.0.0.0 for private Interconnect

Enter the hostname (node1.oracle.com in my case) and click apply.

Click done

Step11:Software Selection

Choose "Software Selection" link and pick the following options if you want a GUI console.

Base Environment > Server with GUI
Add-Ons for Selected Environment > Compatibility Libraries
Add-Ons for Selected Environment > Development Tools

Once you have completed your selections, click the "Done" button.

Step 12: Start Installation

Once you have completed your alterations to the default configuration, click the "Begin Installation" button.

On this Screen you can set the root Password and also you can create a New user

Step13: Reboot The Machine after Installation

Once the Installation is completed click on Reboot Button

Step14:Accepting License Agreement

On this Screen click License Information link and accept the license. Create New user if you have not created so far

Once you are done click on Finish Configuration

Step15:

Follow the Steps to adopt the language and so on.......

Step16: Disable SELinux

Disable SELinux

disabled or switched to permissive. To do this edit the "/etc/selinux/config" file, making sure the SELINUX flag is set as follows.
```
SELINUX=disabled
```

Step16: Disable Firewall

Disable Firewall

If the OS is to be used for an Oracle installation, it is easier if the firewall is disabled. This can be done by issuing the following commands from a terminal window as the "root" user.
```
# systemctl stop firewalld
# systemctl disable firewalld
```

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