1. What is private mode? When does user switch to user mode?
Ans: 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.
2. How can I restrict the user from printing? (What authorizations should we disable)
Ans: we can restrict using su01-defaults- clear the output device (if any).
3. How can I restrict the user from printing? (What authorizations should we disable)
Ans: Use the object S_SPO_DEV to restrict.
4. What is osp$ mean? What if the user is given with this authorisation?
Ans: OPS$ is the mechanism the <SID>adm users uses to connect to the database.
5. Why do you use DDIC user not SAP* for Support Packs and SPam?
Ans: Do _NOT_ use neither DDIC nor SAP* for applying support packages. Copy DDIC to a separate user and use that user to apply them.
6. Can you kill a Job?
Ans: Yes – SM37 – select – kill
7. If you have a long-running Job, how do you analyse?
Ans: Use transaction SE30.
Get More Information about SAP BASIS Transaction Codes.
8. How to uncar car/sar files in a single shot?
Ans: on Unix: $ for i in *.SAR; do SAPCAR -xvf $i; done
9. When should we use Transactional RFC?
Ans: A “transactional RFC” means, that either both parties agree that the data was correctly transferred – or not. There is no “half data transfer”.
10. 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?
Ans: 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.
11. Let me know if my understanding below is correct:
A) By default the RFC destination is synchronous
B) Asynchronous RFC is used in case if the system initiated the RFC call no need to wait for the response before it proceeds to something else.
Ans: 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.
12. Which table contains the details related to Q defined in SPAM? Is there a way to revert back the Q defined? If yes, How?
Ans: 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.
13. What is a developer key? and how to generate a developer key?
Ans: 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.
14. What is XI3.0? EXPLAIN XI = Exchange Infrastructure – Part of Netweaver 2004.
Ans: 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
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.
15. How to see when were the optimizer stats last time run? We are using win2k, oracle 9, sapr346c.
Ans: Assumed DB=Oracle
Select any table let's take MARA here but you should do the same for MSEG and few others to see whether the dates match or not.Run the following command on the command prompt:-
select last_analyzed from dba_tables where table_name like ‘%MARA%’;
This gives you a straight answer.Else you can always fish around in DB14 for seeing when the optimzer stats were updated.
16. What is the use of profile paramater ztta/roll_area?
Ans: The value specifies the size of the roll area in bytes. The roll area is one of several memory areas, which satisfies the user requests of user programs.
For technical reasons, however, the first 250 KB or so of a user context are always stored in the roll area, further data up to the roll area limit ztta/roll_first, in the extended memory, up to the limit ztta/roll_extension or if extended memory is exhausted, then again in the roll area, until the roll area is full, then in the local process area, up to the limit abap/heap_area_dia or abap/heap_area_total or until the address space or the swap space is exhausted.
Followed by termination with errors like STORAGE_PARAMETERS_WRONG_SET an error code, that points to memory bottleneck Minimum data transfer with context change; however, the increase helps to avoid problems (address space, swap space, operating system paging).
Get More Questions and Answers with Explanation at SAP BASIS Forums.
17. What is R/3? and what is basis version?
Ans: SAP Basis:
- Provides the runtime environment for all SAP Applications
- Optimally embeds the application in the system environment
- Defines a stable architecture framework for system enhancements
- Contains the tools for administering the entire system
- Allows the distribution of resources and system components
- Provides interfaces for decentralized system parts and external products.
An R/3 instance is a group of R/3 services that are started and stopped as a unit (by an R/3 dispatcher) and have a common instance profile. The name of an R/3 instance is composed of letters standing for the relevant services, and an instance number which is unique for each computer. The services may be D, V, E, B, M, G, or S, which respectively stand for dialogue, update, enqueue, background, message, gateway, and spool services.
18. I would like to know the version or name of SAP that is implemented in real time?
Ans: This is a very generic question and really depends on what you are implementing (modules).
The history of the “R/3″ is
3.0D Basis 300
3.0E Basis 300
3.0F Basis 300
3.1H Basis 310
3.1I Basis 310
4.0B Basis 400
4.5B Basis 450
4.6C Basis 460
4.71 Basis 6.20
4.72 Basis 6.20
5.00 Basis 6.40 (ECC 5.0 – Enterprise Core components)
6.00 Basis 7.00 (ECC 6.0) – actually in RampUp
All of those have increased business functionality and interfaces to other systems (CRM, BW etc.)
19. What is MySAP?
Ans: It’s a term for all the systems that in a contract (e. g. a MySAP business suite consist of ERP2005, CRM2005, SRM2005).
20. What is the system's configuration required to implement SAP.. i.e for production, development and QAS servers the hard disk space, RAM, Processor
Ans: This also depends on what you are implementing, how many users will work on the system, how many records in what area are created etc.
We need a BIG database system and an even bigger application server for ~ 900 users and 12 languages.
21. What is ASAP?
Ans: It’s an old term for an implementation strategy. Blueprint -> prototype -> goLive (if you want to say it in one sentence).
22. How should I set priority for Printing say like user, teamlead, project manager?
Ans: There’s nothing like “priority” settings for spool processes. Just define more (profile parameter rdisp/wp_no_spool) processes so people don’t need to wait.
23. Using Tc SGEN I have generated 74% job and later I have terminated the job. I wish to start generating from where it stopped I have refreshed but to no chance, nothing was done. How should I further proceed so as to complete the remaining job?
Ans: Start SGEN again and select the same you have selected before. It will popup and ask if you want to start from scratch or generate the just the remaining.
24. Ask him/her to describe how SAP handles Memory Management?
Ans: ST02 / ST03 In general via table buffers, you could go into the whole Work Process, roll in, roll out, heap (private) memory, etc. however just as a Unix or DBA admin would know, is you look this up when needed for the exact specifics.
25. Ask him/her to describe where they would look at the buffer statistics, and what steps they would use to adjust them?
Ans: ST02, RZ10
26. Ask him/her to describe how to setup a printer in SAP or where they would look to research why a user/users can not print?
Ans: SPAD, SP01, SM50, SU01
27. Keep the interview to 3 general areas:
1) DB (what is the directory structure/ where are the files kept oracle alerts, init.ora, redo logs, archive logs, etc.; possibly some basics stuff like what to do “high level” when the archive directory fills up, etc. Keep this minimal as from a SAP basis admin point of view Oracle is just a big giant bit bucket and SAP can handle to the daily monitoring and maintenance itself.
2) OS (what is the directory structure (what is NFS mounted and why / where are the message files contained for the OS error log; basic commands for the OS eg. Unix, mv, cp, ls, grep, ps-ef, df-k, etc. That is pretty much all the SAP basis admin will need to know. Client/Server architecture.
3) SAP (what is the directory structure / where are files located ie. profiles – start, instance, default (what are they and what is the order of precedence) start is for startup only, instance is the first to be read then the default and if a given parameter cannot be found in the instance or then the default then the internal standard is taken from RZ10 setting.
You can ask them to run Transaction codes to you. Menus constantly change so go with T-codes. He should have a good knowledge of the following areas; transports, user /print /spool /batch management, monitoring, client tools and copies, support packages, kernel patches, workload analysis, Roles and Security, etc.
The standard list of t-codes is pretty much
SM50, SM51, SM66, SM12, SM13, SM21, DB01, DB02, DB13, ST01, ST02, ST03, ST04, ST05, ST06, SU01, SUIM, PFCG, SCC4, SE01, SE09, SE10, SPAM, SM35, SM36, SM37, SPAD, SP01 SCC3, SCCL, SCC9 this are pretty much you heavy hitters for monitoring and support.
I would ask in general how he would troubleshoot the following:
- User cannot connect to SAP
check SAP logon settings, ping the host, check message server, check dispatcher, etc.
- User cannot print
check SAP user setup, check SPAD, check spools, check unix queue or print queue at the os level, etc
- System seems slow
check SM66, SM51, SM50, SM21, ST06, ST03, SMLG, AL08 etc.
Some important things to remember is to ask not get specific to your installation or specific system setup as all SAP instances are different, keep your question to general topics and general answers.
The most important thing to notice when choosing a candidate is not how they parrot back answers to you, but if they can
a) think for themselves and
b) they actually like to and will keep on learning as no one knows it all and
c) they have a good background and willingness to perform analysis and will keep on digging until the answer is found or until their resources are exhausted and then they will pull in what is required to figure it out.
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