Oracle Net Manager, a GUI tool, configures Oracle Net Services for an Oracle home on a local client or server host.[4] (Prior to Oracle 9i known as "Net8 Assistant".[5])
Net8 enables the machines in your network to "talk" with one another. It facilitates and manages communication sessions between a client application and a remote database. Specifically, Net8 performs three basic operations:
Connection - opening and closing connections between a client (or a server acting as a client) and a database server over a network protocol.
Data Transport - packaging and sending data such as SQL statements and data responses so that it can be transmitted and understood between a client and a server.
Exception Handling - initiating interrupt requests from the client or server.
Net8 uses the Transparent Network Substrate (TNS) and industry-standard networking protocols to connect a client to a server and establish an Oracle session.
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Oracle Net, a proprietary networking stack, runs both on client devices and on Oracle database servers in order to set up and maintain connections and messaging between client applications and servers. Oracle Net (formerly called "SQL*Net" or "Net8") comprises two software components:
Oracle Net Foundation Layer: makes and maintains connection sessions. The Oracle Net Foundation Layer establishes and also maintains the connection between the client application and server. It must reside on both the client and server for peer-to-peer communication to occur.
Oracle Protocol Support: interfaces with underlying networking protocols such as TCP/IP, named pipes, or Sockets Direct Protocol (SDP).
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