9 Configuring and Administering Oracle Net Listener

Oracle Net Listener is a separate process that runs on the database server. It receives incoming client connection requests and manages the traffic of these requests to the database server. Find out how to configure the listener to accept client connections.

• Overview of Oracle Net Listener
  A listener is configured with one or more listening protocol addresses, information about supported services, and parameters that control its runtime behavior. The listener configuration is stored in a configuration file named listener.ora.
• Configuring Dynamic Service Registration
  Service registration allows processes, such as an Oracle database, to identify their available services to the listener, which then acts as a port mapper for those services.
• Configuring Oracle Net Listener During Installation
  Oracle Universal Installer launches Oracle Net Configuration Assistant during installation. Oracle Net Configuration Assistant configures the listening protocol address and service information for Oracle Database.
• Customizing Oracle Net Listener Configuration
  If the default or installed configuration is not adequate for a particular environment, then you can use Oracle Net Manager to customize the listener.ora configuration.
• Administering the Listener
  After the listener is configured, you can administer it with the Listener Control utility, Oracle Enterprise Manager Cloud Control, and the Server Control utility (SRVCTL).
• Understanding Listener Redirects
  The listener redirect feature allows a client to connect to a pluggable database (PDB) using an unchanged connect descriptor even after the PDB is migrated to a new location in the Oracle Public Cloud.