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Creating public virtual IP addresses for use by Oracle

Oracle requires one virtual public network address for the Oracle listener process on each node.

Before starting the Oracle installation, you must create virtual IP addresses for each node. An IP address and an associated host name should be registered in the domain name service (DNS) for each public network interface.

 To obtain public virtual IP addresses for use by Oracle

1. Obtain one virtual IP per node.
2. Add entry for the virtual IP and virtual public name in the /etc/hosts file, for all nodes.
3. Register with DNS.

   Example:

   10.10.11.1 galaxy_pub

   10.10.11.1 nebula_pub