ABAP Connection or RFC Destination needs to be checked before calling any remote enabled function module, if connection is checked prior to a Remote function module call, we can avoid system dumps whenever RFC destination is down or incase of login problems.
Manual way to test a RFC connection is to goto transaction SM59, select the RFC Destination, Double click on the same and Click on Action Button - Connection Test
AUTOMATED PROGRAM TO SIMULATE SM59 - Connection Test
I have create a program using a standard function module CAT_CHECK_RFC_DESTINATION , Syntax of the program as follows :
REPORT zcvtest.
PARAMETERS: P_lsys like RSCAT-RFCDEST.
data: l_msgv1 type sy-msgv1,
l_msgv2 type sy-msgv2,
l_subrc type sy-subrc.
CALL FUNCTION 'CAT_CHECK_RFC_DESTINATION'
EXPORTING
rfcdestination = p_lsys
IMPORTING
MSGV1 = l_msgv1
MSGV2 = l_msgv2
RFC_SUBRC = l_subrc.
if l_subrc = '0'.
write: 'Success'.
else.
write: l_msgv1,l_msgv2.
endif.
Test Results
Negative Case - A Failed RFC
Using the program, Same RFC destination is checked:
Selection Screen
Output
Success Case
Selection screen
Output
Value : This document shows efficient way of using Function module to check RFC connection before making any RFC Calls, this will make sure that no dumps are encountered in the production system.