Load balancing across multiple application servers not working with JCo RFC

[Former Member]

We have a problem where inbound messages to the Mapping Runtime engine (ABAP -> J2EE) are not load balanced over application servers. However, load balancing does take place across server nodes within one application server.

Our system comprises of the following:

Central Instance (2 X server nodes)

Database Instance

2 X Dialog Instances (with 2 X server nodes each)

The 1st application server that starts is usually the one that is used for inbound messaging.

We have looked at the sap gateway configuration and have tried various options without much luck:

i.e.: local gateways vs. one central gateway, load balancing type by changing parameter gw/reg_lb_level, see: http://help.sap.com/saphelp_nw70/helpdata/EN/bb/9f12f24b9b11d189750000e8322d00/frameset.htm

Here are our release levels:

SAP_ABA 700 0012 SAPKA70012

SAP_BASIS 700 0012 SAPKB70012

PI_BASIS 2005_1_700 0012 SAPKIPYJ7C

ST-PI 2005_1_700 0005 SAPKITLQI5

SAP_BW 700 0013 SAPKW70013

ST-A/PI 01J_BCO700 0000 -

Any help would be greatly appreciated.

Many thanks

[Former Member]

Tim

Did you follow the guide here:

How to Scale Up SAP Exchange Infrastructure 3.0

Learn what the most likely scaled system architecture looks like, and read about a step by step procedure to install additional dialog instances. The guide also walks you through additional configuration steps and the application of Support Package Stacks.

https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/c3d9d710-0d01-0010-7486-9a51ab92...

We followed this guide for XI3.0 and PI7.0 and works successfully!