SAP GUI Installation

SAP GUI:
          Sap GUI is a front end tool which is used to access remote center server and runs on different operating systems like Windows, UNIX flavor, etc.,
          Sap GUI is used to manage and access SAP applications like SAP ECC and SAP Business Intelligence systems.
          The following are the supported available versions for different platforms

1. SAP GUI for Windows environment.
2. SAP GUI for Java environment.
3. SAP GUI for HTML/Internet Transaction Server(ITS). 

As mentioned, there are three different GUI's available and we can select the right version based on the requirement.

How to download Sap GUI from SAP Market place:

         The steps below navigates the SAP GUI from SAP Market place.

• Go to- service.sap.com to login to SAP Market Place.
• Login using SID SXXXXXXXX and password. 
• Once you login, go to Products > Software Downloads

• Under Software downloads, go to Installation and upgrades. Follow the alphabetical order A-Z and select ‘G’ from list.

• Select the required platform from the list available, you can select SAP GUI from windows, SAP GUI for JAVA, and SAP GUI from Windows for s/4. 
• Once you click there, you can see detailed information about all that is ther in latest version of SAP GUI.
• Go to downloads and select files to add to the download basket.

• you can get it from the download basket later on save the file to the local system and run the setup. you can select to choose from different components.

 

• Press next and finish the installation after completion the setup you will get a shortcut of SAP GUI on your desktop.
• double click on the icon(SAP logon) then you see the screen in that screen you have to select new tab and give the specific information and get connection to the particular system.

Sap Architecture

Sap System 3-tier Architecture:
     
           The image given below is 3-tier Architecture of SAP System. It contains 3 layers presentation layer, Application layer and Database layer.

          "Presentation layer" is the Front end user layer communicate with the application server to perform all the processing and which is also known as Brain of an Sap System.
           Presentation layer consist of different components for ABAP and Java that enables the communication and processing of data in Sap System.
           The communication made between the Presentation layer and Application layer is DIAG (Dynamic information and action gateway) protocol.

          "Application Layer" is the server layer which consist of the multiple instances and communicate with the database layer.
           As the above figure shows Application layer consist of Message server, Dispatcher, Work processes, user control, ABAP interpreter, SQL interpreter, Screen Interpreter and R3 buffer.

• Message server which accepts the request coming from the front end user and made a communication between dispatcher. Message server is managing the load balancing.
• Dispatcher which accepts the request coming from the message server and made a connection to the work processes in FIFO format.
• Work processes executes dialog steps in R/3 applications separately. Types of work processes are given below.

1. Dialog work process          :It is responsible for dialog process.
2. Background work process :It is responsible for background work process.
3. spool work process            :It is responsible for output requests.
4. Enqueue Work process      :It is responsible for locks
5. Update work process         :Responsible for updates.
6. Gateway work process      :It is responsible for connection between systems.

• ABAP interpreter is responsible to monitor the dispatcher queue.
• SQL interpreter is responsible to take with database.
• Screen interpreter is responsible for displaying the process of the system.
• R3buffer is responsible to store the recent transactions updated in database.   

          "Database layer" is responsible to store all the data. The database of the Sap system is kept on a separate server for performance and security reasons.

Sap Architecture

Sap System 3-tier Architecture:
     
           The image given below is 3-tier Architecture of SAP System. It contains 3 layers presentation layer, Application layer and Database layer.

          "Presentation layer" is the Front end user layer communicate with the application server to perform all the processing and which is also known as Brain of an Sap System.
           Presentation layer consist of different components for ABAP and Java that enables the communication and processing of data in Sap System.
           The communication made between the Presentation layer and Application layer is DIAG (Dynamic information and action gateway) protocol.

          "Application Layer" is the server layer which consist of the multiple instances and communicate with the database layer.
           As the above figure shows Application layer consist of Message server, Dispatcher, Work processes, user control, ABAP interpreter, SQL interpreter, Screen Interpreter and R3 buffer.

• Message server which accepts the request coming from the front end user and made a communication between dispatcher and 

          "Database layer" is responsible to store all the data. The database of the Sap system is kept on a separate server for performance and security reasons.

Introduction to Sap Basis

SAP stands for "Systems Applications Products".
SAP is O.S Dependent.

BASIS stands for "Business Application Software Integrated Solutions".

• Sap Basis is the middle ware tool for Applications, Operating systems and Database.
• Sap Basis refers to the administration work of Sap system that includes activities like installation and configuration, load balancing and Monitoring the SAP applications running on Java stack and Sap ABAP.
• Basis supports operating systems like Microsoft windows,Unix flavours, server edition etc and databases like Oracle, DB2, Informix, Maxdb, Microsoft SQL Server etc..
• some of the basis relate tasks are mention below: 

1. Client related tasks(create, copy, delete, import/export...)
2. Background jobs scheduling, job monitoring, job deletion etc.
3. Creating users locking and unlocking users changing user passwords etc.
4. Database related tasks like backups, restores, monitoring etc.
5. Monitoring the Sap applications.
6. System Logs monitoring. 
7. Performance tuning
8. System installation and configuration.
9. SAP license maintenance.
10. Maintaining STMS related tasks.
11. Profile and operation mode maintenance
12. Applying support patches, upgrading and installing add-ons, kernel versions.
13. SNOTE applying and removing errors.
14. System copy,
15. System refresh ,etc

    

    

SAP Basis Contents

1. Introduction to basis
2. Client Administration
3. User Administration
4. Background jobs
5. Kernal upgrade and Patch Administration
6. RFC connections
7. Transport Management Systems
8. Data Migrations