2508036 - JCo connection is not load balanced, connection always get redirected to one dedicated ABAP server | SAP Knowledge Base Article

SAP Knowledge Base Article - Preview

2508036 - JCo connection is not load balanced, connection always get redirected to one dedicated ABAP server

Symptom

  • ABAP system is High Availability and it has instances like DL5_ASCS10_testvm, DL5_DVEBMGS20_serverA, DL5_D20_serverB, DL5_ERS22_serverA, DL5_ERS22_serverB. testvm is virtual host and it get resolved to either physical host serverA or serverB at runtime.
  • In t-code SMLG, one group (like PUBLIC) has been configured to have both instance DL5_DVEBMGS20_serverA and DL5_D20_serverB.
  • To achieve load balance, following JCo parameters has been used to connect from custom program to ABAP system using JCo. However at runtime, JCo connection always get redirected to the ABAP server that ASCS10 runs on. It is not load balanced.
    jco.client.sysnr = 20
    jco.client.mshost = testvm
    jco.client.group = PUBLIC
    jco.client.r3name = DL5

Read more...

Environment

SAP Java Connector 3.0x

Product

SAP Composition Environment all versions ; SAP NetWeaver all versions

Keywords

負荷分散, 片方 , ha, 负载均衡, log on group, logon group, abap message server, msgserver, application server, application host, sid, instance number , KBA , BC-MID-CON-JCO , Java-Connector , BC-MID-RFC , RFC , BC-CST-MS , Message Service , BC-CST-LG , SAPlogon, Load Balancing , BC-CCM-CNF-GRP , Workload Balancing and Group Management , Problem

About this page

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

Search for additional results

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