FAQ on SAP Basis
Support for your SAP basis
SAP Basis is structured as a classic three-tier model. It contains the following components:
SAP will provide all SAP Notes in the SAP ONE Support Launchpad digitally signed. This is to increase the security when the updates are loaded. If you have unsigned SAP hints, there is a risk that the notice has been changed unnoticed and malicious code will be added to your SAP system when you install the notice. This poses a significant threat to the SAP system, which is why the digitally signed provision of the clues is an important improvement. However, to use digitally signed notes in your system, you will need to take a few steps to prepare them. If you install SAPCAR version 7.2 or later and have a user with the necessary permissions, all you have to do is insert the Note 2408073 into your system and do the manual pre- and post-processing. A digital signature technically ensures that any change can be detected at the notice and can be checked by the system to see if the present note, which is to be inserted into the system, is unchanged. Prerequisites to use digitally signed SAP hints To prepare your SAP system for digitally signed clues, you first have to meet some requirements: Digital signed SAP hints are provided as SAR files. The SAR files are unpacked with SAPCAR and checked for their digital signature. SAPCAR must be available on the Application Server in version 7.20 or higher. Therefore, it is strongly advised to update SAPCAR. If SAPCAR is not at least in version 7.20, the digital signature verification fails and the message cannot be unzipped. Installation of the digitally signed clue is then not possible. The implementing user also needs some permissions to perform the necessary manual pre- and post-processing of the note on the system: Authentication for the transaction SLG1 Read permission for the S_APPL_LOG permission to write and delete data from the application directory Upgrade the SAPCAR version on your system to version 7.20 or higher SAP basis version 700 or higher, for older versions the notice must be inserted manually If you have met these requirements, you can use the implementation of note 24080 Start 73. Implementation SAP Note number 2408073.
SAP Basis is simpler
Application layer: The application layer is the central component of the SAP ERP system and is therefore also referred to as the base system. All applications and calculations are executed here. The application layer communicates with both the database layer and the presentation layer. On the one hand, it requests data from the database layer, processes it and then passes it on to the presentation layer. On the other hand, data that is newly entered in the presentation layer is passed on to the database layer and stored there.
Using profile parameters, we can configure everything in the SAP system. Some parameters are dynamically modifiable, which means that they can be changed without restarting the system. However, these changes are not permanent, i.e. after a system restart, the pre-set profile parameters are used again. Other parameters, however, are static, i.e. only with a restart and only permanently modifiable. Most profile parameters for memory allocation are actually static. However, there is the possibility to adapt it dynamically with the report RSMEMORY. Read how to find out if a parameter is static or dynamic and how to use the RSMEMORY report to dynamically adjust the memory allocation parameters. RZ11 - Maintenance of profile parameters The transaction RZ10 gives us information about profiles, which in turn contain different profile parameters. In the transaction RZ11, however, it is possible to view information about individual parameters, provided that you know their name. As you can read in our Memory Parameter Post, the following 5 parameters are particularly important for memory management: abap/heap_area_total abap/heap_area_dia abap/heap_area_nondia ztta/roll_extension_dia ztta/roll_extension_nondia If you don't know exactly what a parameter might be called, it's worth using the F4 help here. For example, for the parameter abab/heap_area_dia, the RZ11 outputs: Description of the parameter abap/heap_area_dia in the RZ11 As you can see here, it is not a dynamic parameter. Now it is rather sorry if you want to test whether there is enough memory available to restart the system again and again. For this purpose, there is the RSMEMORY report. RSMEMORY - Test your memory allocation strategy Report RSMEMORY Report View No documentation or value help available here, but SAP documentation tells you how to use the report. This first distinguishes between dialogue and non-dialogue work processes. That is, in the first area you can set Extended Memory (Storage Class 1) and Heap Memory (Storage Class 2) for Dialogue Workprocesses, and in the second area you can set it for non-dialogue workprocesses.
Tools such as "Shortcut for SAP Systems" are extremely useful in basic administration.
Therefore, they should be deactivated / set to inactive as soon as possible, as soon as the system operation is ensured.
You do not need to build up authorisation expertise.