BASISbeginner
SAP System Architecture
Foundational and intermediate coverage of SAP System Architecture: the three-tier model, instance and work process design, system landscape layout, and how these architectural choices drive administration, monitoring, transport strategy, and high-availability planning across ECC, S/4HANA, HANA, and Cloud ALM environments.
Overview
Foundational and intermediate coverage of SAP System Architecture: the three-tier model, instance and work process design, system landscape layout, and how these architectural choices drive administration, monitoring, transport strategy, and high-availability planning across ECC, S/4HANA, HANA, and Cloud ALM environments.
Lessons in this topic
- SAP System Architecture Tutorial (Part 1)Introduces the classic SAP three-tier architecture (presentation, application, database) and the core instance components a Basis consultant must understand before touching any production system.
- System Landscape Design, Instance Distribution, and High Availability Planning (Part 2)Explains how individual SAP systems are combined into a landscape (DEV/QAS/PRD), how instances are distributed across hosts for scalability, and the architectural patterns used to achieve high availability and disaster recovery.
- SAP ABAP Application Server Runtime: Dispatcher, Work Processes, and Memory Areas (Part 3)Explains how the SAP ABAP application server processes user requests internally through the dispatcher, work process types, and memory management, and how Basis consultants use this model to diagnose performance and availability issues.
Interview questions covered
- What are the core concepts of SAP System Architecture, and how would you explain them clearly in an SAP interview?
- How would you apply SAP System Architecture in a real SAP project? Walk through the design or implementation approach.
- A production issue is reported in SAP System Architecture. What would you check first, and how would you troubleshoot it systematically?
- What are the most important design decisions, trade-offs, and best practices in SAP System Architecture?
- Suppose you inherit an existing SAP System Architecture solution. How would you review it before making a change?
- A project encounters this situation while working on System Landscape Design, Instance Distribution, and High Availability Planning: A retail company running S/4HANA on-premise experienced a database host failure during peak sales season that caused a full production outage lasting several hours because HANA System Replication had been configured but never tested end-to-end after a recent infrastructure change. Walk through how you would analyze the requirement or issue, what you would validate, and how you would test the solution before release.
- A project encounters this situation while working on SAP ABAP Application Server Runtime: Dispatcher, Work Processes, and Memory Areas: During a month-end financial close on an S/4HANA on-premise system, finance users reported that the system became unresponsive for roughly twenty minutes even though infrastructure monitoring showed CPU utilization below fifty percent. Walk through how you would analyze the requirement or issue, what you would validate, and how you would test the solution before release.
- Using this SAP project situation — During a go-live weekend for an S/4HANA conversion, users reported intermittent 'no dialog work process free' short dumps during peak load testing — explain SAP Three-Tier Architecture and Core Building Blocks. What should happen, which concepts or process steps matter, and what common mistake would you avoid?