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.
• About Viewing Port Numbers and Access URLs
  In most cases, the port number of an Oracle Database component is displayed in the tool used to configure the port.
• 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.