1. 2 Copyright © Oracle Corporation, 2001. All rights reserved. Basic Oracle Net Architecture

2. 2-2 Copyright © Oracle Corporation, 2001. All rights reserved. Objectives After completing this lesson, you should be able to do the following: Explain the key components of the Oracle Net layered architecture Explain Oracle Net Services role in client server connections Describe how web client connections are established through Oracle networking products

3. 2-3 Copyright © Oracle Corporation, 2001. All rights reserved. Oracle Net Connections Oracle Net is used to establish connections between applications on a network depending on the following: –The network configuration –The location of the nodes –The application –The network protocol The connections types can be: –Client-Server Application –Web Application Connection

4. 2-4 Copyright © Oracle Corporation, 2001. All rights reserved. Client-Server Application Connection: No Middle-Tier ServerClient TTC Forms/SQL*Plus Oracle Net OPS Protocol TTC Oracle Database Oracle Net OPS Protocol

5. 2-5 Copyright © Oracle Corporation, 2001. All rights reserved.

6. 2-6 Copyright © Oracle Corporation, 2001. All rights reserved. Web Client Application Connections Web browsers can connect to an Oracle server in the following ways: Using a Web Server as a middle tier configured with a: –JDBC Oracle Call Interface (OCI) driver –Thin JDBC driver Connecting directly to an Oracle server using –IIOP –HTTP

7. 2-7 Copyright © Oracle Corporation, 2001. All rights reserved. Web Client Application Connection: Java Application Client Server Web Application Server (client) TTC Java application Oracle Net OPS Protocol TTC Oracle database Oracle Net OPS Protocol JDBC Driver

8. 2-8 Copyright © Oracle Corporation, 2001. All rights reserved. Web Client Application Connection: Java Applet Client Server Web Application Server (client) JavaTTC Java applet Java Net TCP/IP TTC Oracle database Oracle Net OPS TCP/IP JDBC Thin driver

9. 2-9 Copyright © Oracle Corporation, 2001. All rights reserved. Web Client Application Connection: Web Server Middle-Tier Web browser Oracle server User Server Web application server Client Server HTTP TCP/IP Java application or applet

10. 2-10 Copyright © Oracle Corporation, 2001. All rights reserved. Web Client Application Connection: No Middle-Tier Server Client HTTP, IIOP Web browser TCP/IP HTTP, IIOP Oracle database OPS TCP/IP

11. 2-11 Copyright © Oracle Corporation, 2001. All rights reserved. Web Client Application Connection: No Middle Tier Oracle Server supporting HTTP and IIOP Server IIOP Client Server Client Web browser Web browser HTTP

12. 2-12 Copyright © Oracle Corporation, 2001. All rights reserved. Summary In this lesson, you should have learned how to: Explain the key components of the Oracle Net layered architecture Explain Oracle Net Services role in client server connections Describe how web client connections are established through Oracle networking products