Ans: SAP NetWeaver is SAP's integrated technology computing platform and is the technical foundation for many SAP applications since the SAP Business Suite. SAP NetWeaver is marketed as a service-oriented application and integration platform. SAP NetWeaver provides the development and runtime environment for SAP applications and can be used for custom development and integration with other applications and systems.
Ans: Transactions are processing units grouped to provide specific units. They have four principal characteristics. The initial letters of these characteristics together form the acronym ACID.
Atomic means that a transaction is either fully successful or does not have any effects at all. If a transaction-oriented system goes down, you need to ensure that inconsistent, partial results are not stored.
Consistent means that the system status changes from one that is accurate and consistent in business terms to another that is also accurate and consistent in business terms.
Isolated means that the changes made within a transaction can only be seen by other transactions, even those that run simultaneously, after the final confirmation.
The results of a transaction are durable because, after the final confirmation, they are stored permanently in the database.
Ans: We can trigger the idoc by using T Code - WE19
Ans: SAP stands for System Analysis and Program Development.
SAP's Business Suite has four applications as below:
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Ans: Lock management is used in SAP system to ensure data consistency and to check that data records cannot be changed by any particular user at any particular time. A database transaction is a combination of the physical and logical unit. The database lock administration can only coordinate this type of database transaction. From an SAP point of view, this is not sufficient, because SAP transactions, which are formed from a sequence of logically related work steps that are consistent in business terms, are generally made up of several dialog steps. SAP systems need to have their own lock management. Enqueue's work process is used for this purpose. This also ensures that the platform independence of lock management is maintained.
Ans: For an SAP transaction, the graphical representation of the screen and related processing logic is called a Dynpro (dynamic program). Each Dynpro consists of a PBO/PAI module to prepare and process the data displayed or entered on the screen.
Ans: Integration repository --> Imported objects ---> Idoc.
Ans: The types of processes in SAP AS are:
Ans: An instance is an administrative unit that combines SAP system components proving one or more services. The services provided by an instance are started or stopped together. You use a common instance profile to set parameters of all the components of an instance. Each instance has its own buffer area. An instance runs on one physical computer, but there can be multiple instances on one computer. An instance is identified by the system ID(SID) and the instance number. There are two types of instances :
The central instance of the SAP system is distinguished by the fact that it offers services that no other instance of the system offers. For the AS ABAP, these are the message server and the enqueue work process. For the AS Java, you can recognize the central instance by the software deployment manager (SDM).
Ans: The following processes are used for operating business application software:
When you are installing and configuring an SAP system, you need to decide how you are going to distribute the required processes among the available hardware. There are various ways of doing this :
Ans: In a hardware-oriented view, the term server means the central server in a network that provides data, memory, and resources for the workstations(clients).
In the software-oriented view, the client and server are both defined as the process level(service). Service in this context is a service provided by a software component. This software component can consist of a process or a group of processes and is then called a server for that service. Software components that use a service are called clients. At the same time, clients can also be servers for other specific services.
Ans: /nex in the t-code entry field of the SAP toolbar. This terminates all separate sessions and logs off immediately (without warning!).
Ans: SAP system provides you with various help options :
F1 Help: It is used to display an explanation of fields, menus, functions, and messages. The F1 help also displays technical information on the relevant field.
F4 Help: It is used to display possible input values. You can also call up the F4 help for a field using the button immediately to the right of the selected field.
SAP Library (Online Documentation): The SAP library is a useful aid to getting to know system functions. It allows you to access the online documentation. The information stored here does not simply describe how to use system functions, it also explains system architecture concepts, gives examples of how you can configure various processes and warns you about possible user errors and their consequences.
Ans: The application developer can choose between different lock modes :
Write locks (lock mode Exclusive): the lock data can be edited only by one user. The requests for another write lock and another read lock are rejected. A write lock protects the locked objects against all types of other transactions. Only the same lock owner can set the lock again.
Read locks(lock mode Shared): several users can have access to the locked data at the same time. The requests for additional read locks are accepted, even if they are from other users. A write lock is rejected.
Enhanced write locks(lock mode exclusive noncumulative): while write locks can be successively requested and released by the same transaction, and enhanced write lock can only be requested once, even by the same transaction. All other requests for locks are rejected.
Optimistic locks(lock mode Optimistic): optimistic locks respond like reading lock at first and can be changed to write locks. An optimistic lock is set if the user displays the data in changed mode.
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Ans: In the SAP system, a business process is mapped using an SAP transaction that can contain several screen changes. Data changes effected by this process are supposed to be executed completely or not at all in the database. The update system offers increased security, performance, and restorability in the execution of database changes. The updating system is a technology that allows SAP transactions to off-load time-intensive database changes.
To increase performance further, application developers can configure different types of updates :
Ans: There are 3 different installation options for SAP Netweaver AS. These are :
Ans:
Ans: Metadata or message Metadata provides the structure definition of the XI message. can be created in IR . which is called Message Type.
The inbound proxy is the server proxy and the outbound proxy is the client proxy. In client-server architecture let me explain, that someone is sending a request for data then that someone will be server and that is through a proxy, and the client will fulfill this requirement and send the response back through a proxy that is an outbound proxy.
Component monitoring means majorly monitoring the status of communication channels that they are flowing data properly or not, the status of the adapter engine, etc.
Performance Monitoring is to monitor the instance of servers for each and every interface.
Ans: The inbound proxy is the server proxy and the outbound proxy is the client proxy. In client-server architecture let me explain, that someone is sending a request for data then that someone will be server and that is through a proxy, and the client will fulfill this requirement and send the response back through a proxy that is an outbound proxy.
Ans: We can trigger the idoc by using T Code - WE19
Component monitoring means majorly monitoring the status of communication channels whether they are flowing data properly or not, the status of the adapter engine, etc.
Performance Monitoring is to monitor the instance of servers for each and every interface.
Ans: XSLT MAPPING Converts from XML to text, HTML, and DHTML. The main difference is the XSLT Mapping itself generates the target structure. There is no other tool or mapping to convert in XML to text and HTML.
Ans: Functional Spec derives from Software requirements. Software requirement derives from Marketing requirements. MRS will be prepared by Business Analysts with help of End Users. So, Functional Spec is a small piece of the requirement to fill the business requirements. Finally, the Functionality will be validated/Verified against MRS tested by the End-User during user acceptance testing.
Ans: XSLT MAPPING Converts from XML to text, HTML, and DHTML.and the main difference is that XSLT Mapping itself generates the target structure.there is no other tool or mapping in convert in XML to text and Html.
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