Saturday, April 25, 2015

Oracle Installation Prerequisites

This article describes the installation of Oracle Database 11g Release 2 (11.2.0.4) 64-bit on Oracle Linux 7 (OL7) 64-bit. The article is based on a server installation with a minimum of 2G swap and secure Linux set to permissive. An example of this type of Linux installation can be seen here.

Download Software

Download the Oracle software using one of the two link below. If you have access to My Oracle Support (MOS), then it is better to download the 11.2.0.4 version, since this is the first release of 11.2 that is supported on Oracle Linux 7.

Unpack Files

Unzip the files.
unzip linux.x64_11gR2_database_1of2.zip
unzip linux.x64_11gR2_database_2of2.zip
You should now have a single directory called "database" containing installation files.

Hosts File

The "/etc/hosts" file must contain a fully qualified name for the server.
<IP-address>  <fully-qualified-machine-name>  <machine-name>
For example.
127.0.0.1       localhost localhost.localdomain localhost4 localhost4.localdomain4
192.168.0.215   ol7.localdomain  ol7
Set the correct hostname in the "/etc/hostname" file.
ol7.localdomain

Oracle Installation Prerequisites

Perform either the Automatic Setup or the Manual Setup to complete the basic prerequisites. The Additional Setup is required for all installations.

Automatic Setup

If you plan to use the "oracle-rdbms-server-11gR2-preinstall" package to perform all your prerequisite setup, follow the instructions at http://public-yum.oracle.com to setup the yum repository for OL, then perform the following command.
# yum install oracle-rdbms-server-11gR2-preinstall
All necessary prerequisites will be performed automatically.
It is probably worth doing a full update as well, but this is not strictly speaking necessary.
# yum update
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