R/3 SAP Basis System Structure
Administration
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).
In order to make a transaction in cryptocurrencies, you do not have to let your bank know about it as you would for "normal" money, but you have to use the Private Key to prove that you own the coins. The transaction looks like a piece of the puzzle. Half of the puzzle piece consists of information about the coin set, time and public address of the sender or receiver. The other half is the signature of the private key belonging to the sent public address. Both halves make this piece unique. Changing only one piece of information would completely change the whole transaction or the appearance of the puzzle piece. This transaction is transferred to the network or to the miner and is checked for correctness first. If everything fits, the transaction will be sent to other miners who will do the same. Otherwise, the transaction is ignored. Miners try to integrate the transactions into a block. This is called mining and we have described it so that the miners put the puzzle pieces together into a puzzle (block). A small part of a block to be integrated follows from the block that was previously mined. If all miners accept the correctness of a completed block, they will all work the next one immediately. The puzzle (block) is fixed and is irrevocably connected to the block before or after. The blocks form a chain and are called blockchain, which contains all the transactions that have ever been made and is visible and unchangeable by everyone. In doing so, blockchain replaces a central institution and avoids double-spending, which ultimately gives value to a cryptocurrency. Smart Contracts The biggest advance compared to Bitcoin and similar applications is that second-generation blockchains, such as Ethereum, use the so-called Turing-Complete script language Solidity. This enables calculations to be made within the blockchain. While Bitcoin allows only rudimentary multi-signature functions, Ethereum opens the door to much more complex operations called smart contracts. Smart contracts are contracts in which a decentralised blockchain ensures their unchangeability and execution.
Understanding the structure and functioning of the system is especially important for IT administration. It is not for nothing that "SAP Basis Administrator" is a separate professional field. On the page www.sap-corner.de you will find useful information on this topic.
Migration to the Cloud Platforms
If you are running a multi-system landscape with a common transport directory, it is convenient to enable this option only in the first system you are inserting support packages into, and to disable it in the following systems. Since the data files no longer need to be regenerated there, this saves time when playing in. Delete data files after inserting You can specify whether the data files should be deleted after inserting the support packages. This saves disk space and is enabled in the default setting. If you are running a multi-system landscape with a common transport directory, it is convenient to disable this option, since then the data files in the other systems no longer need to be re-created (see above Regenerate data files). Execute ABAP/Dynpro generation This option determines whether the programmes and screens shipped with the support packages should be generated during the commit. Note that generation can take a long time. Without automatic generation, the programmes and dynpros are not generated until the first call. Note that this parameter can only be affected by you if the generation is allowed by SAP during the insertion of this support package. The SPAM update does not affect the generation. SPAM Settings Option SAPM Basic Setting Transmission Monitor From Scenario Standard Rebuild Data File A data file after the example. Delete Do a Generation From Use the transaction SPAM to insert Support Packages [page 8] into your system, regardless of whether the support packages come from the SAPNet - R/3 Frontend, the SAPNet - Web Frontend, or Collection CDs. Prerequisites User: It must have the appropriate permissions [page 7] for the SAP Patch Manager. He must be registered with the client 000. He must have called the transaction SPAM. Select Tools ABAP Workbench Tool Maintenance Patches or enter the transaction code SPAM.
Using various user, administration and monitoring tools, the SAP Basis system is controlled and managed by an administrator, who is thus responsible for its trouble-free operation. Many companies hand over these tasks to an external service provider.
Some missing SAP basic functions in the standard are supplied by the PC application "Shortcut for SAP Systems".
Here, the data is graphically prepared for the user on the end device by means of software components from the application programs of the application layer.
So much information... how can you keep it so that you can find it again when you need it? Scribble Papers is a "note box" that makes this very easy.
Error messages of the programmes tp and R3trans The cause of error can always be found in the corresponding transport log.