Basis interview questions

1) How can I view the SAP License Key and System Information?
a) Login to SAP system with any client and select the Menu Item "System ---> status".
b) You can see the Version info, License info, Support Pack levels, Database and OS details.

Interview Questions for SAP Basis
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 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.
How to see when were the optimizer stats last time run? We are using win2k, oracle 9, sapr346c.
Assumed DB=Oracle

Select any table lets 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.

1. What types of emergency service is offered by Basis911?
Basis911 can assist you with:
• A SAP system that won’t start
• Loss of system stability
• Emergency Database Maintenance
• Critical performance issues in SAP
• Troubleshooting ABAP dumps and system errors
• System Restores
• Emergency System Relocations
• Transport System Reconfiguration and repairs
• OSS connectivity issues
• Emergency kernel patches
• Emergency support packs
• Emergency system installations
• Shift handoffs (been up for 36 hours working with SAP support? Need a professional Basis Consultant in the mix while you sleep?)
• Emergency operations coverage (Even Basis Admins get sick or called away unexpectedly)
• Any other number of SAP Emergencies. If you’re not sure if we can help, give us a call, and we’ll let you know before you’re charged anything.
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2. Who will answer my calls?
• Your calls will initially be routed to a Basis911 Basis Consultant or Manager. They will discuss the nature of your issue, and let you know if we can be of immediate service. You will then be connected to the Basis911 Consultant that will be attached to your issue going forward.
• In the event that we cannot be of immediate assistance, we will do our best to provide you with contact information of groups that might better service your request.
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3. What systems do you support?
Basis911 supports all SAP products on major platforms and databases.
• Windows
• Unix
• Linux
• iSeries / AS/400
• Oracle
• DB2
• SQL Server
• SAPDB
• Informix
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4. What versions of SAP do you support?
Basis911 supports all versions of SAP from 3.x and up.
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5. Do you support functional issues?
While Basis911 cannot directly troubleshoot issues involving functional configuration, we can assist with the resolution of the issues involving anything on the Basis side of things. We can also assist in the communication between your group and SAP support.
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6. What are your hours of support?
Basis911 is open 24/7, every day of the year. Our rates are divided into standard business hours, and off-hours/weekend/holiday rates, but we can provide support virtually any time, any day.
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7. Do you guarantee a fix?
Basis911 can ensure you that you will have a seasoned, professional Basis consultant working on your issue with you. While we can not guarantee a successful resolution to every issue we assist with, we can guarantee the most prompt, professional, and experienced assistance at fair rates.
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8. How do you connect to my systems?
• Basis911 consultants can utilize virtually any available client based VPN solution, if one is readily available.
• If a VPN solution would not be feasible at the time, Basis911 will provide a web-based meeting session that will allow your Basis911 consultant to walk you through an issue. You can also give control to your consultant, to allow them to do the necessary troubleshooting and take the appropriate measures in your system, while you watch.
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9. Can you assist with longer term support or project work?
Basis911 can jump in at any time and pick up Basis support or project assistance. Once the situation is stabilized, Basis911 can work with associated consulting groups to provide long term support or project work.
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10. Why Basis911 instead of SAP Support?
• Basis911 is not meant to replace SAP support. We advise that in any emergency, a message is opened with SAP. Basis911 will work in conjunction with SAP support as needed, in order to facilitate the quickest resolution of your issue.
• Basis911 is positioned to provide you the immediate assignment of a professional Basis consultant dedicated to resolving your issue. No long queue time, and if we don’t feel that we can help you, we’ll let you know ahead of time.
• SAP support follows the clock, Basis Administrators need to sleep. Basis911 can cover an open SAP message while your staff gets some well deserved rest.
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11. Where are your consultants located?
Our corporate headquarters are located in Milwaukee, WI, and most of our consultants live in the area. We do have additional consultants located outside of Milwaukee, however all of our consultants and staff are U.S. citizens, and located in the United States.
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12. What if my issue can’t be fixed remotely?
• It’s our experience that the vast majority of SAP issues can be addressed remotely. By working remotely, Basis911 can help to minimize the cost of your issue in fees, and more importantly, downtime.
• If your issue does require an on-site visit, Basis911 consultants can be scheduled to make an on-site visit, based on their availability. Emergency on-site visits are a one-day minimum, and will be subject to charges for travel time and expenses.