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SQL*Plus User's Guide and Reference - InfoLab

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Web Browser<br />

Application Server<br />

Oracle Database<br />

i<strong>SQL*Plus</strong> Architecture<br />

The i<strong>SQL*Plus</strong> Server is installed on the same machine as the Application Server.<br />

The client may or may not also be on this machine. The middle tier coordinates<br />

interactions <strong>and</strong> resources between the client tier <strong>and</strong> the database tier. The<br />

database is Oracle8i, Oracle9i or Oracle Database 10g accessed through Oracle Net.<br />

The i<strong>SQL*Plus</strong> user interface comprises web pages served to your web browser<br />

through the Internet or your intranet. There is no installation or configuration<br />

required for the i<strong>SQL*Plus</strong> user interface. You only need to know the URL of the<br />

Application Server to access an available Oracle database.<br />

The Application Server is installed when Oracle Database is installed.<br />

The middle tier contains a Java2 Enterprise Edition (J2EE) compliant application<br />

server. It uses Oracle Containers for Java (OC4J) as the server engine. The<br />

Application Server enables communication <strong>and</strong> authentication between the<br />

i<strong>SQL*Plus</strong> user interface <strong>and</strong> Oracle Database.<br />

Oracle Net components provide communication between the i<strong>SQL*Plus</strong><br />

Application Server <strong>and</strong> Oracle Database in the same way as for a client server<br />

installation of Oracle Database.<br />

<strong>SQL*Plus</strong> Overview 1-3

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