Hello dear colleagues,
I have installed ERP 6.0 EHP 7 production system based on MaxDB 7.9 in cluster environment (MSCS). ASCS and MaxDB database are roles in an Windows 2012 R2 MSCS. Primary and secondary applicationserver are installed on separate Hosts. For example the SAP Business Connector will be used for B2A communication. I have to create a rfc connection HR_DE_ELSTER on the SAP ERP system (registered program ELSTER_XML_P21). On the Business Connector also a connection has to be created that is pointing to the SAP ERP P21. The first way to do this is to connect against the primary applicationserver. in this case I have to add the gateway host and gateway service to the RFC-Destination on the SAP ERP System P21. In this way all users on both applicationservers can use the HR_DE_ELSTER. But if the primary applicationserver is offline no B2A communication is possible.
The second way is to connect the Business Connector against the load balancing of the SAP ERP P21 (message server on ASCS Cluster role). In this case the Business Connector registers at primary or secondary applicationserver depending on load. On the RFC Destination HR_DE_ELSTER i do not have to supply the Gateway Option (gateway host and gateway service). The result is: Randomly B2A communication works or not.
Probably there is a third way using a standalone Gateway in a Cluster role. Did anybody install such configuration or is there a documentation (How To) available?
Regards Frank