Principle question to RFC

Hello,
I have a basic question to RFC execution. Maybe somebody can give me a good hint.
Assume, we have an SAP system whose application servers are all located in Hamburg.
Furthermore there are users all over Europe, using SAPGUI.
Close to the users there are content servers to store documents and to provide fast access.
Assume that there is a 3rd party product which can convert any document into a pdf format. The functionality is located on different servers which are located close to the content servers.
There should be a background process on the SAP application server which calls an RFC on the pdf Convert Server and retrieves a document from the content server to get it converted.
Now the question: will the document be transferred to the application server to Hamburg first and from there to the pdf Convert Server? WIll the result (the pdf) also be sent to Hamburg first before it can be stored in a local content server?
Or is RFC itself so 'intelligent' to avoid these unnecessary data transfers?
I try to ask the question in general. Hopefully somebody understands the problem.
Thanks in advance.

Dear Mr. Kretz,
SAP RFC is 'only' a mechanism to perform remote function invoke. Thus it makes some definition on server and client side and defines a transfer protocol.
SAP RFC itself does not define, which partners in your scenario are communicating as client or server. It is the task of the architect of your solution to define the process (of course also with respect to performance and communication overhead)
There should be a background process on the SAP application server which calls an RFC on the pdf Convert Server and retrieves a document from the content server to get it converted.
... will the document be transferred to the application server to Hamburg first and from there to the pdf Convert Server? WIll the result (the pdf) also be sent to Hamburg first before it can be stored in a local content server?
The whole thing depends on the ability of your server to certain functions.
If your Convert server is able to access docs on the content server directly by himself without ABAP "help", it can work like:
SAP AppServer -> RFC -> Convert Server <- some communication protocol -> Content Server
and will not require data transfer over Hamburg.
If Convert Server and Content server cooperate only by help of SAP ABAP, it would look like
SAP AppServer -> RFC -> Convert Server -> RFC -> SAP AppServer -> RFC -> Content Server and the whole call stack back.
Or is RFC itself so 'intelligent' to avoid these unnecessary data transfers?
RFC can only control, what is in his scope. That is the communication from a sender to a receiver. RFC itself cannot optimize the calls of a scenario 3 acting parties.
Hope that helps you somewhat.
Best regards

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I would like a liitle clarifiaction about..
Here it goes..
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Hi Deepak,
+
>>We import the "interface" of the Same in Xi.So if I make changes in the BODY of the RFC in R/3... do i need to reimport it in XI.+
Yes you have to.
>>Another question is regarding RFC sender adapter.Program ID..tcp Ip protocol.Conceptually How does this connectivity takes place I tried and it worked ...I dunno How to explain this connectivity taking place just on the basis of PROGRAM ID...
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http://help.sap.com/saphelp_nw04/helpdata/en/09/c88442a07b0e53e10000000a155106/content.htm
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Message was edited by: Siegfried Szameitat

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Q 5: What's about cache memories within the RfcAdapter?
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Hi Harnomit Babraa ,
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https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/user-interface-technology/webdynpro/wd%20java/wdjava%20archive/creating%20a%20web%20dynpro%20application%20accessing%20abap%20functions.pdf
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Hi experts,
I am calling an RFC in a remote SAP R/3 system from another SAP system (say CRM).
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Edited by: Alvaro Tejada Galindo on Feb 25, 2008 2:58 PM

Just to calrify my question;
An RFC is being called in R/3.
The calling system is say CRM.
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1) If the RFC called system (R/3) is down, what would be the expected response from the called system (R/3) to the requesting system (CRM)? i.e what happens when the called system is down/connection breaks down?
When calling the RFC in R/3, I noticed that the call hangs up and the hour glass shows and waits for the RFC reponse for a long time. How can this be prevented? That is, the RFC call should timeout after a certain time if you don't get a response from the called system. How and where this timeout can be set in the ABAP.
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RFC Sender

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Hi have defined a RFC Sender scenario. I think all in Design and Configuration time is OK.
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Thanks in advance,
Regards.

hi,
>>>The commit work must go after de call function, isn't it?
yes
>>>>Another silly question: the rfc must exits in XI server?
only in the repository - you import it into the repository
>>>>No XML traffic in SXMB_MONI, no file written...
check TCODE - SM58 on the r/3 if there are any errors over there
BTW
is the RFC connection to XI working in SM59?
Regards,
michal
<a href="/people/michal.krawczyk2/blog/2005/06/28/xipi-faq-frequently-asked-questions">XI / PI FAQ - Frequently Asked Questions</a>

Concerning RFCs

Hi~ I've got a question about RFCs
I wanna use RFCs without Netweaver or EAI server.(SAP -> .NET)
.NET connector is not suitable for this matter. It's too complicate to make systems
Plz give me some great solutions~

Our company is using mySAP ERP 2005 and we didn't buy Enterprise Portal(the compornent of Netweaver)
we already know the way of ASP.NET Webservice that you told me.
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Message was edited by:
Se il Sohn
Message was edited by:
Se il Sohn

Principle question to RFC

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