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How to compress or extract a SAR file in SAP What is a SAR file ? SAR files are  delivered by SAP for releasing supportpackages of Kernel and other OS level binaries.   How to extract a SAR file in SAP in Unix based operating systems(AIX / HP-UX ) : Login to the Unix system with sidadm user Navigate to the path where the SAR file is located and use following command to extract a SAR file. SAPCAR -xvf <filename.SAR> Please find below example of extracting PIS_COFINS_604_20110311.SAR file extraction. 6 files got extracted from this  process

R/3 Architecture:             SAP uses the industry specific 3-Layer Architecture and named it as R/3 Architecture.             It consists of three 3 Layers 1. Presentation Server/ Layer/ Tier 2. Application Server 3. Database Layer 1. Presentation Server:                         It is a client for all the SAP Solutions. It is also referred as SAPGUI. There are three 3 types of SAP GUI                         1. SAP GUI for windows     (On Windows OS)                         2. SAP GUI for JAVA         (On all OS where JAVA is supported)                         3. SAPGUI for HTML         (for web based) SAP provides various versions of GUI (4.6c, 620, 640, 700, 710) 2. Application Server:                         It is used to handle the user request and process them to the database. It has dispatcher to process and monitor the user request, work process to process and interpret the requests, Buffer areas to store the frequently acc

ABAP+Java-Based Instances ABAP+Java-based instances offer ABAP and Java-based processes. This results in the following definition of a central instance: The central instance of an ABAP+Java-based SAP system offers all the processes of an ABAP central instance and a Java central instance. Hint: Note the following: If you restart the central instance of an ABAP/+Java-based system, for example, the restart affects the following processes. Remember the definition that an instance is distinguished by the fact that all its processes can be started and stopped together. All Java server processes The Java dispatcher The Software Deployment Manager (SDM), if applicable The Internet Communication Manager (ICM) The gateway All ABAP work processes The ABAP dispatcher The ABAP Message Server The Java Central Services instance does not belong to the ABAP+Java central instance. It is started and stopped separately. 2008/62A © 2008 SAP AG. All rights reserved. 7 Unit 1: Fundamentals ADM

How to configure Logon groups in SAP ( SMLG ) Logon Groups: Logon groups (or work groups) are configured to dynamically distribute the load being processed by the dialog work processes. In many cases, SAP systems will have 2 or more sap abap instances. In these cases, logon groups can be configured to achieve dynamic distribution of dialog users on the ABAP instances. A report runs in SAP every 5minutes which determines the load across each server and updates in the memory area of the message server. Other criteria: Logon groups according to SAP application / module:   Separate logon groups can be setup for applications/modules such as HR, FI/CO, SD, MM etc. It means HR module users will be restricted to logon to identified instances, similarly other module users are allowed to login to their respective identified instances.  The advantages of this method, is only the programs of the respective module are loaded into the program buffer of the particul

sap system overview Within an SAP system, or at least the example used here, there are two types of programs, Reports and Dynpro’s. Reports, as the name would suggest, are programs which generate lists of data. They may involve a small amount of interactivity, but mainly they supply data to the front-end interfaces, the SAP GUI and so on. When a user runs a report, they typically get a selection screen. Once they enter their selection parameters and execute the report, they normally cannot intervene in the execution of the program. The program runs, and then displays the output. Dynpro’s are slightly different. They are dynamic programs, and allow the user to intervene in the execution of the program, by processing a series of screens, called 19 SAP SYSTEM OVERVIEW Dialogue screens. The user determines the flow of the program itself by choosing which buttons or fields to interact with on the screen. Their action then triggers different functions which have been coded within the

Chapter 1: SAP System Overview We will start out by covering the high-level architecture of an SAP system, including the technical architecture and platform independence. We will dig into the environment that our ABAP programs run in, which include the work processes and the basic structures of an ABAP program. Then we can focus on a running SAP system, discuss the business model overview, and begin looking at the ABAP workbench. SAP System Architecture First, the Technical Architecture of a typical SAP system will be discussed, before moving on to the Landscape Architecture, and a discussion of why the landscape should be broken into multiple systems. This diagram shows the 3-tier Client/Server architecture of a typical SAP system: 16 SAP SYSTEM OVERVIEW At the top is the Presentation server, which is any input device that can be used to control an SAP system (the diagram shows the SAP GUI, but this could equally be a web browser, a mobile device, and so on). The Presentation lay

Introduction This book has been written with SAP Super-User and Consultants in mind. Whether your current job title is functional consultant, system support analyst, business consultant, project manager for something entirely different, if you are responsible for all have an interest in creating ABAP programs, then this book is for you. Much of the book is written in the "How-To" style and will allow anybody to follow along and create ABAP programs from scratch. It is written in such a way that each chapter builds on the last so that you become familiar in lots of different aspects of SAP ABAP programming to enable you to then start creating your own programs and understand programs you will find in your own SAP system. The principles and guidelines apply across all SAP modules whether you're writing programs for HR, FI, SD or one of the many other modules within SAP. Over my years of working with SAP systems I have had the great pleasure of working with some top-not

Contact the Author As the reader of this book you are my most important critic and commentator. I would love to hear from you to let me know what you did and did not like about this book, as well as to what you think I could do in future books to make them stronger. E-mail: pete@sappro.co.uk Please note that although I cannot personally help you learn SAP ABAP, I am available for corporate hire for project management, technical lead and mentoring programs. Refer to my website http://www.saptraininghq.com to see all the training material I have available and to get a good overview of my expertise.