University of Southern California Enterprise Wide Information Systems SAP R/3 Overview & Basis Technology Instructor: Richard W. Vawter

University of Southern California Topics The R/3 Basis System Client/Server Architecture Application Architecture System Communication Technical Architecture Client/Server Overview Resource Management Technical Configurations Object Migration The “Database” Client

University of Southern California SAP R/3 Basis System LogisticalFinancial

University of Southern California Basis System: Three-Tier Computer Hierarchy Input / Output of data to users Access to Dataase: (Read / Write data) Central Database (Storage of all data) Database Application Presentation Processing of data using application logic Presentation of the processed data to the user

University of Southern California Typical Basis Systems: Client Server Architecture Central System Two - tier Distributed System Two - tier Client/Server Three - tier Client/Server Multi-layer Cooperative Client/Server (w/ release 4.0B) PresentationApplicationDatabase

University of Southern California Basis System: Application Architecture Windows 3.1, Windows 95, Windows NT, OSF/Motif, Presentation Manager, Macintosh ABAP/4, C, C++ DB2/400 OS/400 Windows ‘95 OS/2 IBM AS/400 AT&TData General SNI Bull/ZenithHPSequent CompaqIBMDigital ADABAS D, Oracle 7.1, MS SQL Server 6.0 Windows NT UNIX systems BullHPSNI DigitalIBMSUN AIXSINIX HP-UX SOLARIS Digital UNIX ADABAS D, DB2, INFORMIX, ORACLE 7.1 Hardware Operating Systems Databases Dialog SAPGUI Languages

University of Southern California R/3 Communication / Interfaces Remote Function Call Electronic Data Interchange Program Interface Communication Object Linking and Embedding Application Link Enabling Web Interface

University of Southern California Topics The R/3 Basis System Client/Server Architecture Application Architecture System Communication Technical Architecture Client/Server Overview Resource Management Technical Configurations Object Migration The Client

University of Southern California Client/Server Overview Client Server LAN TCP / IP

University of Southern California Client/Server Overview (Logical Structure) Presentation Data StorageApplication Logic Client Server

University of Southern California SAP R/3 Resource Management: The Dispatcher Data base Application Presentation Buffers Work Process Work Process Work Process Dispatcher SAP GUI Communications

University of Southern California SAP Memory Buffer Relational data base system SAP GUI SAP R/3 Resource Management: Data Flow Data base Application Presentation Work Process Dispatcher Terminal Process Request queues Roll Page

University of Southern California SAP Dispatcher SAP R/3 Resource Management: Work Processes Background JobsSpoolEnqueueDialogUpdateMessage M Gateway R/2 R/3 G A A B B C C

University of Southern California SAP R/3 Resource Management: Lock Management by the Enqueue Work Process Work Process Update Work Process Enqueue Dispatcher Work Process Update Work Process Enqueue Dispatcher Lock table in main storage Message Server Instance A Instance B

University of Southern California SAP R/3 Resource Management: R/3 Instance Dialog.. Update Spool Back- ground Enqueue Dispatcher Database Instance Database Instance Message Server Message Server SAP Gateway SAP Gateway Instance Profiles (parameters) Instance Profiles (parameters) SAP Buffers Start or Stop Start or Stop Central Instance

University of Southern California SAP R/3 Resource Management: Distributed SAP R/3 Processing DialogUpdate Enqueue Spool Dispatcher Mess- age Gate- way Instance 01 Enqueue Dialog... Dispatcher Instance 02 Dialog Back- ground Enqueue Dispatcher Instance 03

University of Southern California Technical Configuration Development TestingProduction Database Servers Application Servers Presentation Servers

University of Southern California Technical Configuration: Example

University of Southern California Object Migration Program A Table A Screen A Program A Table A Screen A Program A Table A Screen A Development QA TestingProduction Corrections and Transport

University of Southern California Object Migration Program A Version 1 Program A Version 1 Program A Version 2 Program A Version 2 Program A Version 3 Program A Version 3 Program A Version 1 Program A Version 1 Program A Version 2 Program A Version 2 Program A Version 3 Program A Version 3 Originals DevelopmentQA Testing Corrections and Transport ? ?

University of Southern California The Client R/3 America R/3 Europe R/3 Japan America Client 010 Japan Client 030 Europe Client 020

University of Southern California Client Copies Configuration Development Interface Testing Quality Assurance User Training