Getting Started Guide

16 Preparing Nodes for Oracle Installation
IP Address and Name Resolution Requirements
The steps below show how to set up your cluster nodes for using Domain
Name System (DNS). For information on how to set up cluster nodes using
GNS, see the Wiki article http://en.community.dell.com/dell-
groups/enterprise_solutions/w/oracle_solutions/1416.aspx.
For a Cluster Using DNS
To set up an Oracle 11g R2 RAC using Oracle DNS (without GNS):
1
Configure at least two interfaces on each node, one for the private IP
address and one for the public IP address.
2 Configure the SCAN NAME on the DNS for Round Robin resolution to
three addresses (recommended) or at least one address. The SCAN
addresses must be on the same subnet as virtual IP addresses and public IP
addresses.
NOTE: For high availability and scalability, it is recommended that you
configure the SCAN to use Round Robin resolution to three IP addresses. The
name for the SCAN cannot begin with a numeral. For installation to succeed,
the SCAN must resolve to at least one address.
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