SAP Knowledge Base Article - Preview

3328861 - Initial RFC connection to ABAP system with load balancing enabled is slow


When connecting to an ABAP system via RFC (for example: from another ABAP system or a product using JCo/NCo) the initial connection/logon time is much higher than subsequent calls.

For example, an SM59 connection test from one ABAP system (the RFC client) to another ABAP system (the RFC server):

The Cause and Resolution of this article only applies provided the following:

  • The RFC server is a NetWeaver AS ABAP or ABAP platform system. (The "target ABAP system".)

  • The destination/connection from the RFC client to the target ABAP system is configured to use load balancing.

  • The logon group defined in SMLG of the target ABAP system is configured with "Ext. RFC-enabled" set to enabled/true.



NetWeaver AS ABAP or ABAP Platform system acting as the RFC server


ABAP platform all versions ; SAP NetWeaver Application Server for ABAP all versions


KBA , BC-CCM-CNF-GRP , Workload Balancing and Group Management , BC-CST-LG , Logon group based load balancing , Problem

About this page

This is a preview of a SAP Knowledge Base Article. Click more to access the full version on SAP for Me (Login required).

Search for additional results

Visit SAP Support Portal's SAP Notes and KBA Search.