Is there any way to limit the number of RFC calls from xMII to SAP R/3

Hi All!

I wanted to know whether the number of simultaneous RFC connections made from xMII to SAP R/3 system can be controlled in any way. Suppose we have a scenario wherein some million Sales Orders or Production Orders are to be updated in SAP R/3 from xMII in a short span of time. For all these updations to take place, multiple RFC calls will be established from xMII to SAP at the same time. This will increase the load on the SAP R/3 system and affect performance of the SAP R/3 system. Is there any check on xMII side to limit the number of RFC calls that can be made to SAP R/3 system?

Regards

Anupam