Manage the underlying operating system, if applicable
System monitoring and management tools
Instead of data maintenance and application development, SAP Basis is more about providing and maintaining the software environment on which the data resides and is processed. Therefore, SAP Basis is an important core of any SAP infrastructure and is required in both previous versions such as R/3, as well as current versions such as S/4HANA 2021.
Mentioning the SUM tool leads us to another part of SAP Basis: system updates and upgrades. Since SAP software receives updates from SAP at regular intervals - in the case of R/3 in the form of SPS (Support Package Stacks) and in the case of S/4HANA in the form of FPS (Feature Pack Stacks) - a large part of an SAP Basis administrator's job is to import these packages into the SAP system.
Call Inheritance Hierarchy
Database layer: The database layer contains a database server on which all the data of the SAP ERP system is managed. This includes the database management system (DBMS for short) and the actual dataset. The dataset includes user data and data tables as well as applications and system control tables.
The presentation layer is based on the software components, collectively called "SAP GUI". This includes several possible implementation variants: for example, SAP GUI for HTML (Web GUI) and Web Dynpro for ABAP (WDA). Since the respective GUI depends entirely on the concrete application, the presentation layer looks very different in practice.
Tools such as "Shortcut for SAP Systems" are extremely useful in basic administration.
Depending on the processing step in which the error occurred, the dialogue box will provide you with additional specific assistance to correct the error.
These application servers provide all the services required by the SAP applications.