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Oracle Distributed Systems
book

Oracle Distributed Systems

by Charles Dye
April 1999
Intermediate to advanced content levelIntermediate to advanced
552 pages
15h 39m
English
O'Reilly Media, Inc.
Content preview from Oracle Distributed Systems

Chapter 2. SQL*Net and Net8

SQL*Net and Net8 are the network protocols Oracle supplies to support communication with an Oracle database over a network. Net8 is the new moniker for SQL*Net which Oracle has introduced with Oracle8.

Protocol Overview

Even if a process is running on the same machine as the database instance, it requires SQL*Net or Net8 to establish its database connection and to perform operations such as record fetching. SQL*Net or Net8 is required for communication between servers and clients and between servers and other servers. This software makes the entire networked database environment appear as a single machine even though multiple machines and network protocols may be involved. Before delving into the architecture and management of SQL*Net/Net8, I’ll provide an introduction to this software’s role in a distributed database environment.

Distributed Processing

Although database transactions are performed on the database server, they are usually not initiated there. A transaction may originate from a mouseclick on a web page or a bar code scan at a grocery store or a button pushed on a Touch- Tone phone—to name a few examples. SQL*Net/Net8 coordinates the communications associated with distributed transactions by establishing connections between clients and servers (or servers and servers), transmitting data back and forth, and disconnecting cleanly. SQL*Net/Net8 is also responsible for translating any differences in character sets or data representations that ...

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Publisher Resources

ISBN: 1565924320Supplemental ContentCatalog PageErrata