Administrator's Guide

Configuring HyperFabric
Configuring HMP for Transparent Local Failover Support
Chapter 4 97
• HMP does not support backward compatibility in the local failover
and non-local failover mode. However, TCP/UDP/IP supports
backward compatibility and interoperability.
• When HMP is configured in the local failover mode, all the resources
in the cluster are utilized. If a resource fails in the cluster and is
restored, HMP does not utilize that resource until another resource
fails.
• Before running clic_start on all the nodes in the cluster, ensure
that all the configured cards are connected in the cluster. In other
words, before running the clic_start command, verify that all the
cables are connected to the adapters and switches.
• If a resource in the cluster fails and is restored, perform the following
steps to ensure full utilization of that resource:
— Shutdown Oracle RAC
— Execute the clic_shutdown command
— Execute the clic_start command
— Restart Oracle RAC
• After executing the clic_start command on all node in the cluster,
ensure that you run Oracle RAC only after one minute
(approximately).
• If all the trunks between the switches are down, then execute
clic_shutdown followed by clic_start on all the nodes in the
cluster, after replacing at least one trunk between the switches.
• Maintain at least one trunk between the switches when Oracle RAC
is running in the cluster.
• If any of the nodes is shut down for administrative reasons, shut
down Oracle RAC before executing clic_shutdown on that node. In
such a case, Oracle RAC continues to be operational on all the other
nodes in the cluster. When you bring up the node that was shut
down, it joins the cluster.