topic Re: RFC dialog processes in Application Development and Automation Discussions

RFC dialog processes

Former Member — Fri, 19 Jan 2018 21:44:06 GMT

WHile connecting to RFC using nco connector from .NET it is creating dialogue process. so we have 25 parallel program to run from SAP dashboard which calls 25 times .NET api and creates connection with SAP system. while calling RFC it is creating 25 dialogue user in SAP system which creates bottleneck in SAP and causing performance issue. is there a way I can call RFC from .NET using nco connector without creating a dialogue user in SAP? please provide some solution on this else we are not able to move our code to other environment.

Re: RFC dialog processes

Sandra_Rossi — Fri, 19 Jan 2018 22:23:42 GMT

The right term to use is "occupying a dialog workprocess", not "creating a dialogue user".

Re: RFC dialog processes

Sandra_Rossi — Fri, 19 Jan 2018 22:31:43 GMT

Why can't you just limit the number of calls at the same time, by your program?

Did you analyze why there is a "bottleneck" issue? (that's weird, for only 25 calls... or did I not understand?)

Otherwise, ask the system administrator if he/she can do something about your issue.

PS: You are just experiencing the DoS attacks, but you do them from the inside 🙂

Re: RFC dialog processes

matt — Sat, 20 Jan 2018 07:50:32 GMT

I've fixed the subject. Sundaram Das, please make the effort to use the correct terminology. Precision and accuracy are important in development.

Re: RFC dialog processes

retired_member — Sat, 20 Jan 2018 09:53:43 GMT

The Facts are summarized here:

https://help.sap.com/doc/abapdocu_752_index_htm/7.52/en-US/index.htm?file=abenrfc_context.htm

Re: RFC dialog processes

Former Member — Mon, 22 Jan 2018 21:07:47 GMT

HI Sandra,

i have checked with my admin team and i found they set the dialogue process count as 19. SO they mentioned BODS use background worker process so we have to use BODS as this is approved by SAP. So is there a way i can call RFC from .NET without creating dialogue process. They mentioned we can't use NCO Connector to call RFC's as it creates dialogue process also RFC's are not meant for bulk data transaction.

Re: RFC dialog processes

Former Member — Mon, 22 Jan 2018 21:10:06 GMT

Hey Matthew, I am not a SAP guy so don't know about any terminology just hearing from my colleagues while integrating SAP data transaction with .NET Application and try to replicating the same words here. I am sorry if i create any confusion here.

Re: RFC dialog processes

Former Member — Mon, 22 Jan 2018 22:24:27 GMT

HI Horst,

Re: RFC dialog processes

Former Member — Tue, 23 Jan 2018 00:48:25 GMT

Hi Sundaram

When using .NET you are using RFC? did you try with SOAp as well does it work the same way

To understand your integration better you are trying to call the SAP systems 25 times and each time you need a different user ? Can you not use the same user when calling the system.

I am not so sure why you need so many users. When a RFC call is done from the external system it can be called multiple times with the same user do you have an issue doing that ? Read this link here; https://help.sap.com/saphelp_sm71_sp11/helpdata/en/c2/5d2ac570228941bc60c0e66580b18a/frameset.htm

Did you try the Asynchronous Methods as mentioned here; https://help.sap.com/saphelp_sm71_sp11/helpdata/en/d9/15cd02ea537a47ac150de532cc1a79/frameset.htm

Pl advise more details and review the links to check if its helpful

Regards

Vinita

Re: RFC dialog processes

Former Member — Tue, 23 Jan 2018 03:24:59 GMT

Hi Vinita,

i find your answer more relevant. I am using the same user to call different RFC function of on each call. Is it possible to create different dialog process for same user on 25 times call. so i have 25 different .net apis and i scheduled these 25 .net apis from sap dash board everyday 2 times. so every day 25 times my .net api will trigger and it will create connection between the sap system and .net. Along with that in SAP system manually lots of user can login so our admin team is thinking if 25 times .net api calls then it will create dialogue process and also if at a a time 30 user login to sap system so it will also create dialogue process it can create bottleneck in the sap system. could you please suggest what will be the best option in that scenario.

Re: RFC dialog processes

Former Member — Tue, 23 Jan 2018 03:39:46 GMT

One more doubt if i call 25 time sap system from .net with same user will it create 25 dialogue process or only one dialogue process as i am using the same user to call RFC from .NET.

Re: RFC dialog processes

Sandra_Rossi — Tue, 23 Jan 2018 08:32:26 GMT

No. RFC is always processed by a dialog workprocess (whatever it is synchronous, asynchronous, etc.) HTTP/SOAP work the same.

Your admins are right, RFC is not for mass processing. But we still don't know what your issue is. Could you describe the "bottleneck" in détails, and why it is an issue? (25 quick RFCs should be fine, but are they quick?)

Mass processing should be scheduled as a background job (in background workprocesses). Dialog workprocesses should be reserved to user activity or to user-like activity (quick actions and processing).

Re: RFC dialog processes

Former Member — Tue, 23 Jan 2018 13:49:33 GMT

Yea I got your point so here the challange for me we have 25 different SAP jobs scheduled in SAP dashboard in different times. Now each SAP job calls .NET Api internally. .NET API internally calls SAP RFC to read huge data from SAP and post the data to some other database. to connect SAP RFC from .NET we use nco connector and while doing that it creates dialogue process. So now what Admins are thinking because we have 25 jobs scheduled from SAP in time diff of 10 mins also users will login to the SAP system frequently. So our admins are thinking if some job take lots of time to process huge data so SAP will block the dialogue process for certain time and as we have 25 jobs running so there may be sometime where all it may create more than 25 dialogue process as we are using nco connector to call RFC. which may cause performance issue or bottleneck in SAP system. so there is no other option from .NET without create dialogue process i can all RFC.

Re: RFC dialog processes

Former Member — Tue, 23 Jan 2018 19:52:31 GMT

hI Sundaram

As far as I know all RFC users are treated as System users and not Dialog users ?

I dont think it would create dialog processes with a system user but better for you to check after you change the user type. Check this link

https://help.sap.com/saphelp_nw70ehp2/helpdata/en/3d/3272396ace5534e10000000a11405a/frameset.htm

Let me know if it helps!

Regards

Vinita

Re: RFC dialog processes

Former Member — Tue, 30 Jan 2018 13:40:23 GMT

Hi Sandra,

thank you for the information. Can I consume SAP web Service from .NET? Does it create dialogue process? What I am planning is i will write select query in my RFC and the RFC i will call inside the web service. This SAP web service i will consume from the .NET application rather than calling SAP RFC directly from .NET as it creates dialogue process.

Re: RFC dialog processes

Former Member — Tue, 30 Jan 2018 13:45:48 GMT

Thank you Vinita for your help let me show this to my admins and test.

Re: RFC dialog processes

Sandra_Rossi — Tue, 30 Jan 2018 14:34:10 GMT

Hi. RFC is done via dialog workprocess because it's intended for short operations. It's the same for web services.

Big processing should be done via background workprocesses. The admins didn't tell you?

Re: RFC dialog processes

Former Member — Tue, 30 Jan 2018 15:09:48 GMT

Hi Sandra,

i found in one article that Communication User type is specifically for External RFC Calls. So if i use the same user type to call RFC or Web Service still it will create dialogue process.

https://help.sap.com/saphelp_nw70ehp2/helpdata/en/3d/3272396ace5534e10000000a11405a/frameset.htm

this is the link

Re: RFC dialog processes

Sandra_Rossi — Tue, 30 Jan 2018 17:01:28 GMT

For RFC and HTTP, it's always a dialog workprocess. Whatever user type you choose.

Re: RFC dialog processes

Former Member — Wed, 31 Jan 2018 04:09:49 GMT

I have tested using Communication type user but still in SAP it is creating dialogue process. i find the documentation is quite misleading here they mentioned Communication user type is meant for dialogue free external RFC call but still it creates dialogue process.