Analysis of information sources in references of the Wikipedia article "Oracle Net Services" in English language version.
Oracle's network interface, Oracle Net, was formerly known as Net8 when used in Oracle8, and SQL*Net when used with Oracle7 and previous versions of Oracle.
By default, the listener listens on port 1521 for clients requiring database access.
Use tnsping
to determine whether an Oracle Net service can be successfully reached [...] specify a protocol address instead of a net service name to test connectivity to an Oracle Names server or Connection Manager instance.
The Oracle Connection Manager is a lightweight, highly-scalable program that can receive Oracle Net packets and re-transmit them to a different server. To a client running Oracle Net, the Connection Manager looks exactly like a database server.
Oracle Net Manager enables you to configure Oracle Net Services for an Oracle home on a local client or server host.
network service name[:] A simple name for a service that resolves to a connect descriptor. Users initiate a connect request by passing a user name and password along with a network service name in a connect string for the service to which they want to connect: CONNECT username/password@net_service_name