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Transcript of SAP Technical Overview.ppt
7/29/2019 SAP Technical Overview.ppt
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SAP System Architecture
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SAP System Architecture
Database Server
M
SAP Application Server(SAP Instance)
Oracle
Informix
DB2
MS SQL Server
MAX DB
G
Dispatcher
Queue
D D B V S E
SAP Buffer(Shared Mem)
SAP GUIDIAG
Dispatcher Queue
ICM
Memory Pipe
SAP Web AS Java
Web Browser
HTTP, HTTPS
SMTP, SOAP, XML, … Web
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SAP Installation Concept
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SAP Installation Concept • Install Oracle RDBMS
• Install Central Instance (SAP Application
Server)
• Install Database Instance
• Install SAP GUI
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1.Install Oracle RDBMS
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Install Oracle RDBMS
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2.Install Central Instance
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Install Central Instance
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3.Install Database Instance
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Install Database Instance
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Install Database Instance
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4.Install SAP GUI
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Install SAP GUI
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SAP Architecture Overview
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SAP System Configuration
Application Application
Database Database
Presentation Presentation
Database , application , presentation processes
One - tier configuration Two - tier
configuration Three - tier configuration
Presentation processes
Database , application processes
Database processes
Application processes
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SAP System : Central Instance
SAP Application Server (Central Instance)
M
G
Dispatcher
Queue
D D B V S E
SAP Buffer
Roll Area
ProgramBuffer
TableBuffer
…
…
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SAP System : Dialog Instance
SAP Application Server (Dialog Instance)
G
Dispatcher
Queue
D D D D
SAP Buffer
Roll Area
ProgramBuffer
TableBuffer
…
…
D D
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SAP Instance
Dispatcher
D D D …
Dispatcher
D …
Dispatcher
D D B … V E S …
M
D B
Dialog Instance A Dialog Instance B
Central Instance
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Work Process Types
D = Dialog
B = Background
V = Update E = Enqueue
S = Spool
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SAP System
• SID = System Identifier
• System Number
Three-tierconfiguration
Databaseprocesses
Application processes
000
001066
System Client
SAP*/06071992DDIC/19920706
earlywatch/supportSAP*/06071992
Standard User
00, 01,… port 3200
00 by default
Monitored by SAP
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SAP System : Client
000
001
066
800
Client Copy
SAP S t L
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SAP System Logon
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Data in SAP System
1. Client-dependent Data
(Client-Specific)
2. Client-independent Data
(Cross-Client)
User Master
Customizing
Application
Master
Transaction
Customizing
Repository
≈ 90 tables
configurations ≈ xxxx tables
≈ xx,xxx tables
e.g. printer
ABAP programs
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SAP System : Application Modules
SAP Client / ServerABAP
FIFinancial
Accounting
COControlling
AMFixed Assets
Mgmt.
TRTreasury
WFWorkflow
ISIndustry
Solutions
MMMaterials
Mgmt.
HRHuman
Resources
SDSales &
Distribution
PPProductionPlanning
QMQuality
Manage-ment PM
Plant Main-tenance
System Landscape
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System Landscape
DEV
CUST DEVL
QAS
QTST PRD
PROD
Common Shared Directory
UTST
SAND TRAN
Unit test
Write ABAP
programTest data
Manage master configuration
transport transport
Training client
Quality Testing
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SAP System : Dialog Processing
Database Server
SAP Application Server
Dispatcher
RequestQueue
D D D D…
SAP Buffer
Program
Roll Area
1
2
3
4
56
7
8
Report ztest.
Tables customers.
Select single * from
customers where id = 1.
Write: / customers-name.
…
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Work Process Architecture
TaskHandler
DYNPRO Processor
ABAP Processor
Local Memory
Memory Space
DB Interface
List buffer
Database Server
Result Set
Dialog Work Process
Receive inputfrom screen
Receive input from ABAP program
Change Open SQL
statement toDB statement
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SAP Web AS Technology
SAP W b A li ti S
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SAP Web Application Server
• The SAP Web AS is an open, scalable, and
high-availability infrastructure for developingdynamic and company-wide Internetapplications
• It is a server based on the well-known SAP
Application Server technology, with theadditional enhancement of Web functionality
• The SAP Web AS is the new technological basisof all mySAP Business suite solutions. It is alsothe core element of the SAP R/3 Enterprisesystem – the successor to the classic SAP R/3
SAP W b AS R l
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SAP Web AS Release
• SAP Web AS 6.10 – ICM
• SAP Web AS 6.20 – ICM, J2EE
• SAP Web AS 6.30 – ICM,J2EE + Eclipse,Web Dynpro
• SAP Web AS 6.40
– ICM,J2EE + Web Dynpro + Integrated ITS• SAP Web AS 7.00
– Oracle 10g …