Getting Started Guide

Preparing Nodes for Oracle Installation 17

Table 2-1 describes the different interfaces, IP address settings and the

resolutions in a cluster.

Configuring a DNS Server

To configure changes on a DNS server for an Oracle 11g R2 cluster using a

DNS (without GNS):

Configure SCAN NAME resolution on DNS server.

A SCAN NAME configured on the DNS server using the Round Robin

policy should resolve to three public IP addresses (recommended),

however the minimum requirement is one public IP address.

For example:

scancluster IN A 192.0.2.1

IN A 192.0.2.2

IN A 192.0.2.3

Where

scancluster

is the SCAN NAME provided during Oracle Grid

installation.

NOTE: The SCAN IP address must be routable and must be in public range.

Table 2-1. Cluster Requirements for DNS

Interface Type Resolution

Public Static DNS

Private Static Not required

Node virtual IP Static DNS

SCAN virtual IP Static DNS