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Study of SAP R/3 Architecture
Submitted by:
Manjinder Singh Sohi
mss046000@utdallas.edu
Manjinder Singh Sohi
Outline
 What is SAP?
 SAP R/3 Architecture
 Components of SAP R/3
 Features of SAP R/3
 Issues
 Conclusion
Manjinder Singh Sohi
What is SAP?
 SAP (System Application and Product) is the name of the
biggest European German Software company as well as the
name of software itself.
 The company was founded in 1972 by the five IBM employees.
 SAP R/3 Software has been developed using ABAP/4 as a
programming language.
 SAP is the ERP (Enterprise Resource Planning) system that
aims to integrate all the different modules(SD,MM,CO,HR etc)
in the company.The integration results in consistency of data
throught out the system and the company as a whole.
 As of 2005, SAP employs over 28,900 people in more than 50
countries.
Manjinder Singh Sohi
SAP R/3 Architecture
 SAP R/3 is one of the main product of SAP,where R
stands for RealTime and the number 3 relates to three
tier application architecture(Data base,Application Server
and Client).
 Most of the business in todays world runs on SAP R/3
system.About 80% of the companies implemented this
software.
Manjinder Singh Sohi
SAP R/3 Architecture (Continued)
Manjinder Singh Sohi
Components of SAP R/3 Architecture
 Internet communication Manager(ICM)-set up
connection to internet. Supports protocol HTTP,SMTP.
 Dispatcher distributes the requests to the work
processes. If all the processes are occupied then the
requests are stored in dispatcher queue.
 ABAP Work Process executes the ABAP code.
 SAP gateway makes the RFC interface between SAP
instances available.
 Message server exchanges the messages and balances
the load.
Manjinder Singh Sohi
Features
 Scalability
 Open Standard Support
 Robustness
Manjinder Singh Sohi
Feature-Scalability
 The architecture is such that it can be easily scalable if
the load at one server is increased.
 As application is independent from the data base and the
presentation layer then the servers can be replicated in
order to balance the load.
 Gateway component using RFC adds many SAP servers
to it.
Manjinder Singh Sohi
Feature-Supports open standards
 SAP R/3 architecture is designed to be support most of
the open standard available today.It can run on
UNIX,NT,AIX etc.
 Customization language used:ABAP/4
 Netweaver:ABAP/4 and JAVA
Manjinder Singh Sohi
Robustness
 SAP R/3 is highly robust as a whole.
 All the components work in the coordinated manner.
So they will work as a whole in order to solve the
unexpected scenario.
Manjinder Singh Sohi
Issues
 No cache memory in ICM
 In SAP R/3 architecture ,clients treated as dumb
terminals.
 Complex Architecture
 No Support for other languages.
Manjinder Singh Sohi
Issues:No Cache
 ICM(Internet Connection Manager)
 ICM uses the threads to parallelize the load that comes up.
Manjinder Singh Sohi
Issue:R/3 models desktops as dumb
terminals
 Today desktops are very powerful and they can be used
to do a large part of computation.
 But in SAP,there is other way round.
Manjinder Singh Sohi
Issue:Complex Architecture
 Today the technology is changing so fast that the code
of SAP R/3 architecture becomes large and more
complex.
 So the possibility of falls behind and not keeping up with
the current technology..
Manjinder Singh Sohi
Issue:No support for other languages.
 SAP R/3 architecture only supports ABAP/4 language.
 New architecture from SAP-Netweaver supports JAVA
also.
 But still support for other popular languages C/C++ etc
left.
Manjinder Singh Sohi
In the Nut-shell
 Even though SAP R/3 architecture supports
scalability,security etc but still there are many issues
that are to be resolved.
 Issues:No cache,customization problem,No Programming
language support(C/C++),Complex architecture,treat
clients as dumb.
Manjinder Singh Sohi
References
 http://help.sap.com/saphelp_nw04/helpdata/en/84/549
53fc405330ee10000000a114084/content.htm[date
accessed April 20,2005)
 Original SAP R/3 release 6.20 (2003) Library
Documentation.
 SAP-Help UTD-SOM(SAP Users Group)
 http://www.hp.com/hpbooks/prentice/chapters/0130280
844.pdf[date accessed April 20,2004]
 www. sapfans.com/[date accessed April 20,2005]

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Sohi manjinder

  • 1. Study of SAP R/3 Architecture Submitted by: Manjinder Singh Sohi mss046000@utdallas.edu
  • 2. Manjinder Singh Sohi Outline  What is SAP?  SAP R/3 Architecture  Components of SAP R/3  Features of SAP R/3  Issues  Conclusion
  • 3. Manjinder Singh Sohi What is SAP?  SAP (System Application and Product) is the name of the biggest European German Software company as well as the name of software itself.  The company was founded in 1972 by the five IBM employees.  SAP R/3 Software has been developed using ABAP/4 as a programming language.  SAP is the ERP (Enterprise Resource Planning) system that aims to integrate all the different modules(SD,MM,CO,HR etc) in the company.The integration results in consistency of data throught out the system and the company as a whole.  As of 2005, SAP employs over 28,900 people in more than 50 countries.
  • 4. Manjinder Singh Sohi SAP R/3 Architecture  SAP R/3 is one of the main product of SAP,where R stands for RealTime and the number 3 relates to three tier application architecture(Data base,Application Server and Client).  Most of the business in todays world runs on SAP R/3 system.About 80% of the companies implemented this software.
  • 5. Manjinder Singh Sohi SAP R/3 Architecture (Continued)
  • 6. Manjinder Singh Sohi Components of SAP R/3 Architecture  Internet communication Manager(ICM)-set up connection to internet. Supports protocol HTTP,SMTP.  Dispatcher distributes the requests to the work processes. If all the processes are occupied then the requests are stored in dispatcher queue.  ABAP Work Process executes the ABAP code.  SAP gateway makes the RFC interface between SAP instances available.  Message server exchanges the messages and balances the load.
  • 7. Manjinder Singh Sohi Features  Scalability  Open Standard Support  Robustness
  • 8. Manjinder Singh Sohi Feature-Scalability  The architecture is such that it can be easily scalable if the load at one server is increased.  As application is independent from the data base and the presentation layer then the servers can be replicated in order to balance the load.  Gateway component using RFC adds many SAP servers to it.
  • 9. Manjinder Singh Sohi Feature-Supports open standards  SAP R/3 architecture is designed to be support most of the open standard available today.It can run on UNIX,NT,AIX etc.  Customization language used:ABAP/4  Netweaver:ABAP/4 and JAVA
  • 10. Manjinder Singh Sohi Robustness  SAP R/3 is highly robust as a whole.  All the components work in the coordinated manner. So they will work as a whole in order to solve the unexpected scenario.
  • 11. Manjinder Singh Sohi Issues  No cache memory in ICM  In SAP R/3 architecture ,clients treated as dumb terminals.  Complex Architecture  No Support for other languages.
  • 12. Manjinder Singh Sohi Issues:No Cache  ICM(Internet Connection Manager)  ICM uses the threads to parallelize the load that comes up.
  • 13. Manjinder Singh Sohi Issue:R/3 models desktops as dumb terminals  Today desktops are very powerful and they can be used to do a large part of computation.  But in SAP,there is other way round.
  • 14. Manjinder Singh Sohi Issue:Complex Architecture  Today the technology is changing so fast that the code of SAP R/3 architecture becomes large and more complex.  So the possibility of falls behind and not keeping up with the current technology..
  • 15. Manjinder Singh Sohi Issue:No support for other languages.  SAP R/3 architecture only supports ABAP/4 language.  New architecture from SAP-Netweaver supports JAVA also.  But still support for other popular languages C/C++ etc left.
  • 16. Manjinder Singh Sohi In the Nut-shell  Even though SAP R/3 architecture supports scalability,security etc but still there are many issues that are to be resolved.  Issues:No cache,customization problem,No Programming language support(C/C++),Complex architecture,treat clients as dumb.
  • 17. Manjinder Singh Sohi References  http://help.sap.com/saphelp_nw04/helpdata/en/84/549 53fc405330ee10000000a114084/content.htm[date accessed April 20,2005)  Original SAP R/3 release 6.20 (2003) Library Documentation.  SAP-Help UTD-SOM(SAP Users Group)  http://www.hp.com/hpbooks/prentice/chapters/0130280 844.pdf[date accessed April 20,2004]  www. sapfans.com/[date accessed April 20,2005]