Services coordinate their sessions with the help of a listener, a process on the server that receives connection requests on behalf of a client application. Listeners are configured to "listen on" protocol addresses for a database service or non-database service.
Protocol addresses are configured in the listener configuration file,
listener.ora
, for a database
service or a non-database service.
An Oracle9i
or Oracle8i database service
automatically registers its information with the listener, such as its
service names, instance names, and load information. This feature, called
service registration, does not
require service configuration in the listener.ora
file.
Other services, including
an Oracle7 database, Oracle8 database, and the Oracle Enterprise Manager
management tools, require service configuration in the listener.ora
file.
Once the listener is configured, the listener can be managed with Listener Control utility
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See Also: Chapter 12, Configuring and Administering the Listener, in the Oracle9i Net Services Administrator's Guide for more information about configuring the listener. |