Getting Started Guide

Preparing Nodes for Oracle Installation 13

private interconnect connections. These private network adapters can be

configured during the initial install process of Oracle Grid or after the

installation process using the oifcfg utility.

Oracle Grid currently creates an alias IP (as known as virtual private IP) on

your private network adapters using the 169.254.*.* subnet for the HAIP. If

the subnet range is already in use, Oracle Grid does not attempt to use it. The

purpose of HAIP is to load balance across all active interconnect interfaces,

and failover to other available interfaces if one of the existing private adapters

becomes unresponsive.

NOTE: When adding additional HAIP addresses (maximum of four) after the

installation of Oracle Grid, restart your Oracle Grid environment to make these new

HAIP addresses active.

The example below provides step-by-step instructions on enabling redundant

interconnect using HAIP on a fresh Oracle 11gR2 (11.2.0.2) Grid

Infrastructure installation.

Edit the file,

/etc/sysconfig/network-scripts/ifcfg-ethX

, where

is the

number of the eth device,

ifcfg-ethX

configuration files of the network

adapters to be used for your private interconnect. The following example

shows eth1 and eth2 using a 192.168.0.* subnet.

DEVICE=eth1

BOOTPROTO=static

HWADDR=00:1E:C9:4B:72:22

ONBOOT=yes

IPADDR=192.168.0.140

NETMASK=255.255.255.0

DEVICE=eth2

HWADDR=00:1E:C9:4B:71:24

BOOTPROTO=static

ONBOOT=yes

IPADDR=192.168.0.141

Book.book Page 13 Tuesday, July 26, 2011 11:33 PM