Using Serviceguard Extension for RAC, 2nd Edition, February 2005 Update

Table Of Contents
Introduction to Serviceguard Extension for RAC
Configuring Packages for Oracle RAC Instances
Chapter 1 23
For example, on a two node cluster with one database, each node can
have one RAC instance and one listener package. Oracle clients can be
configured to connect to either package IP address (or corresponding
hostname) using Oracle Net Services. When a node failure occurs,
existing client connection to the package IP address will be reset after
the listener package fails over and adds the package IP address. For
subsequent connections, for clients configured with basic failover, clients
would connect to the next available listener package's IP address and
listener.