SAP Architecture

SAP System Architecture

SAP System has a 3-tier architecture

 Presentation server

 Application server

 Database server

 The presentation server consists of a graphical user interface on the front end. Each SAP System user

runs an SAP GUI on a dedicated front-end computer.

 The application server is used primarily for data processing. An SAP instance that runs on an

application server combines special SAP services such as dispatching requests. The dispatcher, a

special process on each SAP instance, communicates with the front end SAP GUIs and distributes

work requests to the work processes. The application logic runs in the work processes, which are

connected to the database server.

 The database server is the computer where the database management system (DBMS) is located. The

DBMS (SQL Server) controls the databases and the database objects that perform all the database

activities.

 Note that an SAP GUI on a presentation server does not connect directly with the database,