Sunday, May 18, 2014

SAP Basis Interview Questions and Answers -1



What is private mode? When does user switch to user mode?
Private mode is a mode where the heap data is getting exclusively
allocated by the user and is no more shared across the system. This
happens when your extended memory is exhausted.

What is osp$ mean? What if user is given with this authorisation?
OPS$ is the mechanism the <SID>adm users uses to connect to the
database .

Why do you use DDIC user not SAP* for Support Packs and SPam?
Do _NOT_ use neither DDIC nor SAP* for applying support packages.
Copy DDIC to a separate user and use that user to apply them.

Can you kill a Job?
Yes - SM37 - select - kill

If you have a long running Job, how do you analyse?
Use transaction SE30.

How to uncar car/sar files in a single shot?
on Unix:
$ for i in *.SAR; do SAPCAR -xvf $i; done

When we should use Transactional RFC ?
A "transactional RFC" means, that either both parties agree that the
data was correctly transfered - or not. There is no "half data transfer".

What is the use of Trusted system. I know that there is no need of UID
and PWD to communicate with partner system. In what situation it is
good to go for Trusted system ?
E. g. if you have an R/3 system and a BW system and don't want to
maintain passwords. Same goes for CRM and a lot of other
systems/applications.
Let me know if my understanding below is correct:
1) By default the RFC destination is synchronous
2) Asynchronous RFC is used incase if the system initiated the RFC call
no need to wait for the response before it proceeds to something else.
Yes - that's right.
But keep in mind, that it's not only a technical issue whether to switch
to asynchronous. The application must also be able to handle that
correctly.

Which table contains the details related to Q defined in SPAM? Is there
a way to revert back the Q defined? If yes, How?
There is a "delete" button when you define the queue. If you already
started the import it's no more possible since the system will become
inconsistent.

What is a developer key? and how to generate a developer key?
The developer key is a combination of you installation number, your
license key (that you get from http://service.sap.com/licensekey) and
the user name. You need this for each person that will make changes
(Dictionary or programs) in the system.

What is XI3.0 ? EXPLAIN XI = Exchange Infrastructure - Part of
Netweaver 2004.
SAP Exchange Infrastructure (SAP XI) is SAP's enterprise application
integration (EAI) software, a component of the NetWeaver product
group used to facilitate the exchange of information among a
company's internal software and systems and those of external
parties. Like other NetWeaver components, SAP XI is compatible with
software products of other
companies.
SAP calls XI an integration broker because it mediates between
entities with varying requirements in terms of connectivity, format,
and protocols. According to SAP, XI reduces integration costs by
providing a common repository for interfaces. The central component
of SAP XI is the SAP Integration Server, which facilitates interaction
between diverse operating systems and applications across internal
and external networked computer systems.




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