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Client process
The client process can run on the same machine as the instance or on a separate
computer. A network connects the two computers and provides a way for the two
processes to talk to each other. In either case, the concept is essentially the same??”
two processes are involved in the interaction between a client and the database.
When both processes are on the same machine, Oracle uses local communications
via Inter Process Communication (IPC); when the client is on one machine and the
database server is on another, Oracle uses Oracle Net over the network to communicate
between the two machines.
Application Servers and Web Servers As Clients
Although the discussion in the previous section used the terms client and server
extensively, please don??™t assume that Oracle is strictly a client/server database. Oracle
was one of the early pioneers of client/server computing based on the notion of
two tasks: a client and a server. But when you consider multitier computing involving
web and application servers, the notion of a client changes somewhat.


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