RFC Call from R/3 to BW or any SAP system

[Former Member]

Hi all,

If two SAP ABAP systems are connecting thru RFC [sm59] and if any call made between the systems does the call pass thru gateway or thru RFC protocal and it just make a connection with out gateway.

ex: From WAS 7.0 to R/3 ECC 6.0 we have RFC connection, if a call is made from WAS to R/3 can we see any connection info in SMGW of R/3 in logged clients or active connections or the call made is thru RFC protocal and no gateway is used since these 2 ABAP systems not external systems.

I have gone thru docs if any RFC call from SAP to external system is made thru CPIC or TCP/IP protocal then gateway connections are shown in SMGW ...

For a R/3 or BW or for any SAP system what are External systems means is it only Non-SAP ? Please clarify..

In a landscape of 6 ABAP SAP systems like r/3,bw,cfm,was,gts,ebp... does these systems are external systems to each other ? Means R/3 is external to other SAP systems in the landscape?

Please suggest....

Thanks,

Subhash.G

[Former Member · Accepted solution]

> For a R/3 or BW or for any SAP system what are External systems means is it only Non-SAP ? Please clarify..

Correct, external system here defines all non-SAP systems have data exchange with SAP systems, like Vertex...

>

> In a landscape of 6 ABAP SAP systems like r/3,bw,cfm,was,gts,ebp... does these systems are external systems to each other ? Means R/3 is external to other SAP systems in the landscape?

No, SAP products to each other are not considered as external systems, although there are several different connection types in SM59.

Regards,

[Former Member · Accepted solution]

Hi Fan yu,

Thanks for the reply can you please clarify the below question ..

If two SAP ABAP systems are connecting thru RFC sm59 and if any call made between the systems does the call pass thru gateway or thru RFC protocal and it just make a connection with out gateway...

[Former Member · Accepted solution]

> If two SAP ABAP systems are connecting thru RFC sm59 and if any call made between the systems does the call pass thru gateway or thru RFC protocal and it just make a connection with out gateway...

Between ABAP systems, dispatchers communicate each other to setup RFC connections. Technically, it's still a "gateway" as you could observe in SMGW since it communicates outside world, it's just not using SAP gateway service, the so called "sapgwnn".

[Former Member · Accepted solution]

Can you both take a look at the link below.

RFC interface facilitates the connection.

Link: [http://help.sap.com/saphelp_nw70ehp1/helpdata/en/01/a869cab8f2c443899d634ca63f2898/content.htm]

The RFC interface performs the following actions: 
●     Calls and manages the communication routines that are required in order to communicate with the remote system. 
●     Logs on to and off from the remote system and performs authorization checks for the function group that is used. 
●     Converts actual parameters into the display required by the remote system, and the other way round. This may also include platform-specific conversions (such as differing code pages or byte sequences). This conversion supports all ABAP data types. 
●     Handles all errors that occurr during the communication and, if requested, forwards them to the caller. 

[Former Member]

Thanks