SAP Basis SAP Administration I - NW Admin

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SAP Administration I
SXDA Data Transfer Workbench
He has already gathered a lot of helpful information from the day-to-day business in his department: Johannes knows the RFC interfaces and the corresponding technical RFC users from his work with the applications. He also quickly got the password for various RFC users via the radio ("As long as passwords are only communicated by phone and never exchanged in writing, we are clean!"). And that the RFC users are generously entitled even in productive systems is no longer a secret ("Better to have more permissions than too little; the RFC connections have to run, otherwise there is trouble from the specialist areas!"). Since Johannes has access to the SE37 as a developer, it is not a problem to get the necessary access using the function block BAPI_USER_CHANGE - disguised as RFC User. In short, it changes the user type of a technical RFC user in a production system from to by calling the function block.

How does a blockchain build consensus? Once you decide to send a payment to someone, you must use the Private Key to "sign" it (in German: signature). This means nothing other than that you specify another public address to which you want to send the money and confirm this transaction with your own private key. You don't have a central authority to send the information to, you're going to spread the information to all the other Miners around you. The miners then forward this information to other miners, who in turn do the same. This exponential wave of information reaches the entire network of the distributed community within a few milliseconds. Every time a miner receives a transaction, it checks that the transaction is actually correct. It checks which private key has signed, which public address the transaction should go to and whether the sender has enough "coins" for this transaction. What are consensus mechanisms? Any miner that solves a transaction through complex mathematical calculations is rewarded by the sender with a "fee" (transaction fee). How will it be decided which miner will receive the transaction fee? Because only one can get this reward. Also, what happens when you try a double spending by sending one transaction to one miner and then another transaction with the same money to another one millisecond later? These two could not yet exchange and thus information would be different in the network.
You will need to download the support package again. CANNOT_DETERMINE_DATA_FILES: The name of a data file could not be determined because a profile parameter was not configured correctly. Verify the settings using the RSPARAM report. CANNOT_DISASSEMBLE_R_DATA_FILE: Unable to extract an R3trans data file. A possible cause of error is that the appropriate OCS file was not found or the data file could not be opened for writing. An error occurred while transferring a 20K block from the EPS inbox to the /usr/sap/trans/data (UNIX) directory. CANNOT_DISASSEMBLE_D_DATA_FILE: Unable to extract an ADO data file. The reasons are the same as for CANNOT_DISASSEMBLE_R_DATA_FILE. CANNOT_CREATE_COFILE: The cofile could not be created from the corresponding data file. One of the possible causes of error is that adm does not have write permissions for the /usr/sap/trans/cofiles (UNIX) directory.

The website offers many useful information about SAP basis.

Database layer: All of a company's data is stored in the database, which is located on a database server. Application programs pull the data they need from the database. This data can consist of data tables, applications or system control tables. In addition, the database also takes new information from users and backs it up.

Tools such as "Shortcut for SAP Systems" are extremely useful in basic administration.

If more transactions with user assignment are to be identified at the same time and the role assignment is to be seen directly, the use of the transaction SE16N is recommended.

The freeware Scribble Papers is a "note box" in which all kinds of data can be stored. It takes in typed texts as well as graphics and entire documents. The data is then organised in folders and pages.

In the case of client settings, you should ensure that the production client is protected against overwriting and that changes are only approved via the transport management system (TMS) to ensure traceability.
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