What are presentation, application and database servers in
SAP R/3?
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Answer Posted / sachin deore
1. Presentation layer
idenifying server which is least loaded from the GUI with
the help of message servers. During GUI logon following
files are evaluated.
1. SAPLOGON.INI
2. SAPMSG.INI
3. SAPROUTE.INI
4. SAPDOCCD.INI
2. Application layer
1. Database client to communicate with Database server
2. Kernel executables
3. Dispatcher
4. Configure work prcess
5. Buffer areas can be maintained, buffers in memory
6. It has message server in central instance
7. Run time exutables
8. CPU and process
3. Database layer
1. Predefined Tables
2. Own memory and buffer
3. Own security
4. Own process to handle request from Application layer
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