Oracle B32100-01 - Manual (Page 156)

Installing Middle Tiers Against an OracleAS Cold Failover Cluster Infrastructure
8-32 Oracle Application Server Installation Guide
After setting the variable, you can then run the "emctl action dbconsole"
commands, where action is start, stop, or status (for example, emctl start
dbconsole
).
8.9.4 Create a Clusterware Agent for Automatic Failover
An OracleAS Cold Failover Cluster environment provides the framework for a manual
failover of OracleAS Infrastructure. To achieve automatic failover, you must set up an
agent using the clusterware. An example of automatic failover is setting up the
secondary node to monitor the heart beat of the primary node and when the
secondary node detects that the primary node is down, the virtual IP address, shared
storage, and all the OracleAS Infrastructure processes are failed over to the secondary
node.
8.10 Installing Middle Tiers Against an OracleAS Cold Failover Cluster
Infrastructure
This section describes how to install middle tiers that are not in a cold failover cluster
configuration against an OracleAS Cold Failover Cluster infrastructure.
For non-cold failover cluster middle tiers to work with OracleAS Infrastructure in an
OracleAS Cold Failover Cluster, you can install the middle tiers on computers outside
the cluster, or on nodes within the cluster.
8.10.1 If You Plan to Install Middle Tiers on OracleAS Cold Failover Cluster Nodes
If you plan to install a non-cold failover cluster middle tier on an OracleAS Cold
Failover Cluster node (primary or secondary), perform these tasks before installing the
middle tier:
■
Section 8.10.1.1, "Create a staticports.ini File for the Middle Tier"
■
Section 8.10.1.2, "Rename the /var/opt/oracle Directory Used for the
Infrastructure"
8.10.1.1 Create a staticports.ini File for the Middle Tier
Ensure that the ports used by the middle tier are not the same as the ports used by the
infrastructure. The reason is that the infrastructure can fail over from the primary to
the secondary node (and vice versa), and there must not be any port conflicts on either
node. The same ports must be reserved for the infrastructure on both nodes.
If the infrastructure is running on the same node where you want to install the middle
tier, the installer can detect which ports are in use and select different ports for the
middle tier. For example, if the infrastructure is running on the primary node, and you
run the installer on the primary node to install the middle tier, then the installer can
assign different ports for the middle tier.
However, if the infrastructure is running on a node different from where you want to
install the middle tier, the installer cannot detect which ports are used by the
Note: The preferred solution is to install and run the non-cold
failover cluster middle tiers on nodes outside the OracleAS Cold
Failover Cluster.