11 Managing Oracle Database Port Numbers
Review default port numbers. If needed, use these steps to change assigned ports after installation.
- About Managing Ports
During installation, Oracle Universal Installer assigns port numbers to components from a set of default port numbers. - Port Numbers and Protocols of Oracle Components
Review this information for port numbers and protocols used by components that are configured during the installation. By default, the first port in the range is assigned to the component, if it is available.