RFC – Remote Function Call

RFC – Remote Function?Call

• To connect/transfer data from one sap system to another sap system.
• RFC is using SAP Gateway.

RFC Types

• Synchronous RFC?– For communication between different systems and between SAP WEB AS and SAP GUI.
• Asynchronous RFC?– For communication between different systems and for parallel processing of different tasks.
• Transactional RFC?– Extension of aRFC, It ensures transaction like processing of processing steps that were originally autonomous, It is asynchronous RFC extended to the transactional RFC.
• Queued RFC?– Extension of tRFC, It is also ensures that individual steps are processed in sequence.
• Background RFC?– Successor of tRFC, qRFC

TCODES

SM58?– Transactional RFC

SM59?– Configuration of RFC

RZ12?– RFC Server Group Maintenance [ Extras – RFC Groups (Logon group for RFC) – RFC Server Group Maintenance ]

SMQ1?– monitor for the outbound queue. Outbound Queue means sending the request.

SMQ2?– Monitor for the inbound queue. Inbound queue means receiving the response.

SBGRFCMON?– bgRFC Monitor

RSPFPARAM?– rdisp/rfc*

RFC Connection Types

• Default communication user?TMSADM
• Default RFC connection?– [email protected]_SID
• 10?types of connections in RFC
• RFC Connections are stored in table?– RFCDES
• Where we have to create the trusted systems?– [ In SM59 click on logon security]
• Why we need trusted systems?– [ To communicate the business requirement]
• RZ12?– Used to define RFC Server groups and assign the instance.
• Which user is used when you create RFC?– [?TMSADM]

SM59 – create RFC connection between source client & target client

• Login to the target client.
• SM59 – Create connection
• Give the RFC destination, Connection type, Description and click on Administration. click on technical settings target hostname system (instance) number host name option. Logon & security tab. Logon Procedure – Lang, Client, User, Password & Current User Trusted Relationship
• SAVE
• Click on remote logon button
• Click on start sap easy access button
• Here we can find that client number 001 (we logged 000 in *ent)
• Click on logoff button [ exit from 001 clients]

• Utilities – Connection Test, Authorization Test, Unicode Test – Remote Logon

SM58 – Transactional RFC

SMQ1 – SMQ2 – Queued RFC

RZ12 – define RFC Server groups and assign the instance

SBGRFCMON?– bgRFC Monitor

SARFC – Server Resources

RFC Issues / why RFC connection failure

• Target system to source system does not match like version, production and component.
• May be target system is down
• May be authorization problems
• May be incorrect credential of the target system

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