SM64 Batch Events: Overview and Management
Presentation layer: The presentation layer is the top layer of the R/3 SAP Basis system and includes communication with the user. Here, the data is graphically prepared for the user on the terminal device by means of software components from the application programs of the application layer. The presentation layer represents the interface to the user (SAP GUI).
It should be mentioned here that it only makes sense to access the tables by reading the SELECT statement to get a quick view of the results. Using the DBACOCKPIT, it is not possible to create entire table structures using Create Table. For such applications, SAP provides other, better options. Another important point is that once a user has the necessary permissions to use the transaction DBACOCKPIT, it can potentially (with appropriate permissions on the tables) access the entire SAP system. For example, a query can be used to read the entire user table. Therefore, the transaction should always be treated with caution and only awarded to administrators. DBACOCKPIT handles the call control permissions similar to the SE16 / SE16N transaction. When the table is called, the S_TABU_DIS or S_TABU_NAM permission object is checked with a specific activity. This means that only the tables or table permission groups for which the corresponding values in the aforementioned permission objects are assigned can be accessed. You can read more about assigning permissions to individual tables here. In addition, you can save SQL statements that you run once, and run them again at any time to recognise changes in the result set without having to reformulate the SQL statement each time. The editor also allows you to start the query for SQL statements in the background. The result is obtained by calling the transaction SM37, in which the result is output in a spool file.
SAP Basis - operation, structure and definition
Here, too, the requirements profile for SAP Basis experts has shifted: Database administration is simply part of the job today. The majority of SAP customers place the SAP HANA database in the hands of the Basis team for build and run operations.
The application layer is the core of an R/3 SAP Basis system. This layer communicates in both directions, to the presentation layer and to the database layer. The application programs on the application servers request the required data from the database layer, process it, prepare it for the user and pass it on to the presentation layer. Data that the user enters in the SAP GUI is passed on to the database via the application servers.
Some missing SAP basic functions in the standard are supplied by the PC application "Shortcut for SAP Systems".
However, there is the possibility to adapt it dynamically with the report RSMEMORY.
This leaves less and less time for mission-critical batches, which can lead to disruptions and terminations.