Using Serviceguard Extension for RAC, 10th Edition, April 2011

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.
Node Failure
RAC cluster configuration is designed so that in the event of a node failure, another node with a
separate instance of Oracle can continue processing transactions. Figure 3 shows a typical cluster
with instances running on both nodes.
Figure 3 Before Node Failure
Figure 4 shows the condition where node 1 has failed and Package 1 has been transferred to
node 2. Oracle instance 1 is no longer operating, but it does not fail over to node 2. The IP address
for package 1 was transferred to node 2 along with the package. Package 1 continues to be
available and is now running on node 2. Also, node 2 can now access both the Package 1 disk
and Package 2 disk. Oracle instance 2 now handles all database access, since instance 1 has
gone down.
20 Introduction to Serviceguard Extension for RAC