SAP Basis Oracle DB Administration

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Oracle DB Administration
Migration of SAP systems to HANA DB
This is where all the system's data resides. These are composed of the actual database and the DBMS, the "database management system". In earlier versions, the database here came from different manufacturers. For example, Microsoft SQL or Oracle. Since SAP HANA, a lot has changed for IT in this data layer. This is because the database comes from SAP itself and is automatically monitored by the system. There is more to this database layer than just the working data. Important elements such as the configuration tables and system data for control and application content are also stored here. This is the repository data used by applications.

An understandable and comprehensible strategy enables the SAP basis to derive it as easily as possible to practice and to the resulting requirements and activities. The main task of the SAP basis is to support new business models by implementing the strategy and to show how much technical and financial effort and benefit is generated. It is also the task of the SAP basis to identify the skills and resources necessary for them and to ensure their existence at an early stage.
SAP Administration I
Standardisation of SAP operations as well as SAP systems can be seen as a preparation for automation as well as for cloud, outtasking and outsourcing service forms. Therefore, in the whole context of standardisation and automation, a sequence of tasks and systems needs to be followed. To do this, it is necessary to first make a detailed documentation of the respective object, which also describes the IST state in detail. A standardisation strategy can then be developed, defined and implemented. Only then can we consider automation, outtasking, cloud, and outsourcing.

User authentication is usually performed by entering a user name and password. This information is called user credentials and should only be known to the user, so that no third party can gain access to the system under a false identity. This post explains how a user's password protection can be circumvented and how to prevent it. SAP system legacy data The login data of a user, including password, are saved in the USR02 database table. However, the password is not in plain text, but encrypted as a hash value. For each user there are not only one but up to three generated password hashes. Different algorithms are used to calculate these values, but only the Salted SHA1 can be considered sufficiently safe. Table deduction USR02 The secure password hash is located in the fifth column of the pictured table deduction with the heading Password hash value. The corresponding data field in the column is called PWDSALTEDHASH. Weak Password Hash Risks You have a good and working permission concept that ensures that no processes or data can be manipulated or stolen. A potential attacker now has the ability to read out your database with the password hashes. The hash values are calculated using password crackers, which are available on the Internet at home, and the attacker now has a long list of user credentials. To damage your system, the user will now search for the appropriate permissions and perform the attack under a false identity. Identifying the actual attacker is virtually impossible. Check if your system is vulnerable too Your system generates the weak hash values if the login/password_downwards_compatibility profile parameter has an unequal value of 0.

Some missing SAP basic functions in the standard are supplied by the PC application "Shortcut for SAP Systems".

Service The installations create a service.

The SAP training content is taught directly on the SAP system.
SAP Corner
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