Oracle Applications11i architecture

e-Business Suite 11i architecture

Oracle Applications 11i E-Business Suite (Oracle ERP) use the n-tier architecture (the architecture made for the web). This architecture can be seen on the following graphic:

                                 Oracle Application System Overview

Oracle Applications 11i E-Business Suite (Oracle ERP) use the n-tier architecture. Here are the explications

Desktop tier

        A client could access the Oracle Applications only by using a Web Browser which must have Oracle JInitiator installed on it. Oracle JInitiator is the Oracle Java Virtual Machine used to run Oracle Forms applets.

Application (or middle) tier includes

Web Server:  listens for HTTP requests and provides an HTTP response to the client. The HTTP response usually consists of an HTML document, but can also be a raw file, an image or some other type of document (defined by MIME-types)

 Concurrent Processing Server: server which run reporting programs and data updating programs (periodically or ad hoc). These programs (named concurrent programs) run on this server in background in order not to interfere with the normal operations. When a request is made a row is inserted into  FND_CONCURRENT_REQUEST table. The concurrent managers read these requests in the table and start the relevant concurrent programs

Administration Server:  contains scripts which are used to administer the Oracle Applications e-business Suite. From this server the following operations can be  performed.

 Applying patches (using adpatch)

Maintaining Oracle Applications (using adadmin)

Upgrading Oracle Applications from an earlier release to  11.5.x (using adaimgr)

Forms server: includes the Forms listener and the Forms Runtime Engine. The Forms Runtime Engine  maintains a connection to the database on behalf of the Java client. It uses the same Forms, Menus, and Libraries files that are used for running in client/server mode. No application code changes are required to deploy a legacy client/server application to the Internet.                    

Reports Server:   run Oracle Applications reports and is always installed on the same node as the Concurrent Processing Server. However the reports are administered separately from the concurrent   processing reports. 

Discoverer Server (optional):  is installed if Oracle Discoverer will be used.

  

Database tier 

        The Database tier contains the Oracle Database Server which store all the data needed by Oracle Applications. The database store the Oracle Applications online help as well. The database server communicates with middle tier and does not communicate directly with the desktop tier. 

Introduction for Oracle Applications DBA

Oracle Applications comprise the applications software or business software of the Oracle Corporation. The term refers to the non-database and non-middle ware parts of Oracle's software portfolio.
Oracle sells many functional modules which use the Oracle RDBMS as a back-end, notably Oracle Financials, Oracle HRMS, Oracle SCM, Oracle Projects, Oracle CRM, Oracle Procurement,
Oracle initially launched its application suite with financials software in the late 1980s. The offering as of 2009 extends to supply-chain management, human-resource management, warehouse-management, customer-relationship management, call-centrer services, product-life-cycle management, and many other areas. Both in-house expansion and the acquisition of other companies have vastly expanded Oracle's application software business.
Oracle released Oracle E-Business Suite (EBS/ e-BS) Release 12 (R12) a bundling of several Oracle Applications in February 2007. The release date coincided with new releases of other Oracle-owned products: JD Edwards Enterprise One, Siebel Systems and People Soft.

Oracle E-Business Suite

Oracle's E-Business Suite (also known as Applications/Apps or EB-Suite/EBS) consists of a collection of enterprise resource planning (ERP), customer relationship management(CRM), and supply-chain management (SCM) computer applications either developed or acquired by Oracle. The software utilizes Oracle's core Oracle relational database management system
incorporated into the applications include the Oracle database technologies, (engines for RDBMS, PL/SQL, Java, .NET, HTML and XML), the "technology stack" (Oracle Forms Server, Oracle Reports Server, Apache Web Server, Oracle Discoverer, J initiator and Sun's Java).