what are the RFC's we use in XI

[Former Member]

Whar are the types of RFC we use in XI.

Edited by: Harsha reddy on Jun 23, 2008 10:32 PM

[Former Member · Accepted solution]

Hi

The 5 basic types of RFCs

Synchronous RFC (sRFC)

Asynchronous RFC (aRFC)

Transactional RFC (tRFC)

Queued RFC (qRFC)

Parallel RFC (pRFC)

a good introduction into RFC and the different RFC types is the following article: https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/f078394a-4469-2910-c4bf-853c7567...

Transactional RFC (tRFC)

Transactional RFC (tRFC, also originally known as asynchronous RFC) is an asynchronous communication method that executes the called function module in the RFC server only once. The remote system need not be available at the time when the RFC client program is executing a tRFC. The tRFC component stores the called RFC function, together with the corresponding data, in the SAP database under a unique transaction ID (TID).

Queued RFC (qRFC)

To guarantee that multiple LUWs (Logical unit of work)are processed in the order specified by the application, tRFC can be serialized using queues (inbound and outbound queues). This type of RFC is called queued RFC (qRFC).

qRFC is therefore an extension of tRFC. It transfers an LUW (transaction) only if it has no predecessors (in reference to the sequence defined in different application programs) in the participating queues.

Implementation of qRFC is recommended if you want to guarantee that several transactions are processed in a predefined order.

So if the Quality of service is Exactly once.. Trfc's used...

if the Quality of service is Exactly once in order Qrfc's r used...

http://help.sap.com/saphelp_nw04/helpdata/en/6f/1bd5b6a85b11d6b28500508b5d5211/frameset.htm

http://help.sap.com/saphelp_nw04/helpdata/en/8b/ceea3b31aac554e10000000a114084/content.htm

Thanks

Swarup

Edited by: Swarup Sawant on Jun 23, 2008 10:40 PM

Edited by: Swarup Sawant on Jun 23, 2008 10:40 PM

[Former Member · Accepted solution]

Hi Swarup,

you say only 2 rfc are used right....i.e TRFC and QRFC

[Former Member · Accepted solution]

Hi,

For receiver channels QoS BE (Best Effort) will result in a

synchronous call (sRFC)

QoS EO (Exactly Once) will create a transactional call (tRFC) to the BC.

For sender channels a synchronous call (sRFC) will result in a message with QoS BE

a transactional call (tRFC) will result in a message with QoS EO.

QoS EOIO is not supported by the BC-Adapter.

Thanks

VIkranth

[Former Member · Accepted solution]

Hi,

Based on the requirment of the the type of RFc is used,

Generally tRFC or qRFC, sRFC are used based on quality of service.

tRFC -- Exactly Once (EO)

qRFC-- Exactly Once In Order (EOIO)

sRFC -- Best Efforts (BE)

pRFC -- is use for the executig the parallel instances.

Thanks

Swarup

[Former Member]

Hey check this link below, this is SAP link

http://help.sap.com/saphelp_nw04/helpdata/en/6f/1bd5b6a85b11d6b28500508b5d5211/content.htm

Thanks

Vikranth

[Former Member]

Hi,

1. Transactional RFC (tRFC)

Transactional RFC (tRFC, also originally known as asynchronous RFC) is an asynchronous communication method that executes the called function module in the RFC server only once. The remote system need not be available at the time when the RFC client program is executing a tRFC. The tRFC component stores the called RFC function, together with the corresponding data, in the SAP database under a unique transaction ID (TID).

2.Synchronous RFC

The first version of RFC is synchronous RFC (sRFC). This type of RFC executes the function call based on synchronous communication, which means that the systems involved must both be available at the time the call is made.

3.Queued RFC (qRFC)

To guarantee that multiple LUWs are processed in the order specified by the application, tRFC can be serialized using queues (inbound and outbound queues). This type of RFC is called queued RFC (qRFC).

qRFC is therefore an extension of tRFC. It transfers an LUW (transaction) only if it has no predecessors (in reference to the sequence defined in different application programs) in the participating queues.

Implementation of qRFC is recommended if you want to guarantee that several transactions are processed in a predefined order.

Thanks

Vikranth