Some basic NW questions?

Hi All,
I have a few elementary doubts in SAP NW could you please help me solve it?
1) Where is SAP NW installed? Is it installed on WEB AS which inturn is on Application layer of R/3?
2) Where is WEB AS installed?
3) WHere are all the modules SD, MM, FI/CO installed?
4) When we buy Netweaver do we get all the components like MI, XI, EP MDM etc along with it?
5) If yes to the above, then do we have to install them or they come ready to use?
6) Could you tell me why we have common login for SD, MM, Fi/co etc modules but different logins for EP, XI, MI etc?
Regards,
Ashish

Hi Ashish
There are numerous documents from where you can fined all your answers.But i will tell you briefly :
Ans1: NW is basically an oceshtra of various components.There is a base WEB AS on top of which all other components like EP,XI,BI,MDM etc sits.There are different combinations of OS and database on which you can install NW.
WEB AS is basically the foundation on which all your NW components sits.
Ans2: WEB AS (Web application Server) consists of two types of engine.Dual stack (having both java as well as abap engine) and single stack(having java engine).As java is mentioned you need to have a jdk installed on your system
Ans3:IF you have installed R/3 system say ECC 4.7 etc .All your SD,MM,FI/CO sits on top of your R/3
Ans4:When you buy NW you have to all the softwares but license you have to procure for speacific components.For example: If you want to have XI then XI license has to be procured alond with you WebAS license.
Ans5:Yes you need to install all of these components seperately.First is your WEbAS and on top of that you install the various components according to ur requirement.
Ans6:I disagree with you here.In NW also you can have SSO (single sign on ) concept.That means a common login or single loggin for accessing all your systems.
For more information log on to:
http://help.sap.com
http://service.sap.com
Any querries related to NW feel free to ask

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Some basic SCXI questions

I have a SCXI system here with 3 modules.
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Hi,
The SCXI is an extension for the conditioning of your signals. You need conditioning for some signals that are really low level and their measurement could be erroneous when connected directly to the PC. For example, the thermocouple measurements are low voltage values; therefore some signal conditioning is preferred before feeding these signals to the DAQ card. Your DAQ card (PCI-MIO-16XE-50) has a specific sample rate; and the sample rate of your system will depend on several factors. This knowledge base explains the relationship. More information about the modules you are using can be found in the modules' user manual.
You could directly connect the conditioned signals to the DAQ card, but using the SCXI system you can measure more signals than what you could measure by connecting directly to the card. The outputs of your SCXI modules are connected to a multiplexer that passes those signals to the DAQ device. This article might be helpful in understanding how the signals are connected in the system. You don’t say what the modules in your chassis are; so I’m assuming that for the thermocouple measurements you are using the SCXI-1102 with the 1303 accessory. Please confirm that information. Another really good place to look at is the Getting Started with SCXI manual.
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Ana P
National Instruments
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Some Basic Logic Questions

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I am not familiar with the MOTU 896HD, but I use a MOTU Traveler, so hopefully it is somewhat similar. It should be for the most part plug and play, so Logic should recognize it. When it comes to recording audio, open the mixer, and click tracks to view the audio channels. I've never used Sonar, but I'm guessing most things in this area are similar. First where a channel says something like "Input 1" you can click there and change the input source (this is the input on your MOTU), and then of course you engage for recording which I'm sure you know of this function.
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> Hello all,
> I have some basic questions on XI and File Adapter
> and hope you can help me. Any answer is appreciated.
>
>
> 1. Can I use NFS transport protocol to poll a file
> from a machine in the network, which is not the XI?
yes
> Or do I have to use FTP instead?
>
also you can do it
> 2. If I understand it correctly - when using the
> FTP-File Adapter, XI has the role of a ftp client. I
> have to run a ftp server on my distant machine. XI
> connects to FTP-Server and polls the file.
> Can it also be configured the other way round? The
> scenario I think of would be: FTP client installed on
> distant machine, which connects to FTP-Server(XI) and
> loads up a file. So XI would act as FTP Server.
> I know this works, if I install a ftp Server on the
> computer my XI runs on, and use the NFS-File Adapter
> to observe the folder. But I want to know, if I need
> a second, independant ftp server for this.
>
XI cannot act as FTP server, but it is always a client. When XI is reading (File sender adpater) when XIis writing than it is File Receiver adapter
> 3. And last but not least: When do I need the active
> ftp mode instead of passive?
>
It depends on your firewall configuration. The best and the fastests is active mode but not always available.
> Thanx a lot for your answers!
> Ilona

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http://help.sap.com/saphelp_scm50/helpdata/en/9b/954d3baf755b67e10000000a114084/frameset.htm
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-->Refer Above
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ent
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Suresh Datti

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void sum(int a,int b) throws SumInternalErrorException
try
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} catch (AlgorithmNotFoundException e) {
throw new SumInternalErrorException();
}P.S.: Another problem for me is when a method called in a constructor causes an Exception. I don't want to do try/catch everytime I instantiate an object..
Example:
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}(sorry for editing all the time, I was not really sure what I really wanted to ask until i realised that I had in fact 2 questions at the same time, and still it is hard to explain what I really want to say with it but now the post is relatively final and I will only add small things)
Edited by: kirdie on Jul 7, 2008 2:21 AM
Edited by: kirdie on Jul 7, 2008 2:25 AM
Edited by: kirdie on Jul 7, 2008 2:33 AM
Edited by: kirdie on Jul 7, 2008 2:34 AM

sphinks wrote:
I`m not a guru, but give my point of view. First of all, the first way is rude. You shouldn`t use try with empty catch. "rude" isn't the word I'd use to describe it. Think about what happens if an exception is thrown. How will you know? Your app fails, and you have NO indication as to why. "stupid" or "suicidal" are better descriptions.
Then for the second way, I`ll reccomend for you use not printStackTrace(); , but use special method for it:
public void outputError (Exception e) {
e.printStackTrace();
}It`ll be better just because if in future you`d like to output error message instead of stack of print it on GUI, you`ll need change only one method, but not all 'try' 'catch' statements for changing e.printStackTrace(); with the call of new output method.I disagree with this. Far be it from me to argue against the DRY principle, but I wouldn't code it this way.
I would not recommend exiting from a catch block like that. It's not a strategy for recovery. Just throw the exception.
Then, the third way also good, but I suppose you should use throws only if the caller method should know that called method have a problem (for example, when you read parametrs from gui, so if params are inccorect, main method of programm should know about it and for example show alert window)."throw it everywhere"? No, throw it until you get to an appropriate handler.
If you're writing layered applications - and you should be - you want to identify the layer that will handle the exception. For example, if I'm writing a web app with a view layer, a service layer, and a persistence layer, and there's a problem in the persistence tier, I'd let the service layer know what the persistence exception was. The service layer might translate that into some other exception with some business meaning. The view layer would translate the business exception into something that would be actionable by the user.
And in all other cases I suppose you should use the fourth way. So I suppose it`s better to combine 2,3,4 ways as I have mentioned above.I don't know that I'd recommend special exceptions for every layer. I'd reuse existing classes where I could (e.g., IllegalArgumentException)
Sorry, I can give you advice how to avoid problem with try-catch in constructor. :-(You shouldn't catch anything that you can't handle. If an exception occurs in a constructor that will compromise the object you're trying to create, by all means just throw the exception. No try/catch needed.
You sound like you're looking for a single cookie cutter approach. I'd recommend thinking instead.
%

Some basic questions on HANA

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I heard from one of my colligues that it is mandatory to learn SQL scripts for HANA, is it true?
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