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Error when connecting to R/3 4.6C using JCo

EXPERT RESPONSE FROM: Austin Sincock

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QUESTION POSED ON: 14 April 2003
We're trying to connect to SAP R/3 4.6c using JCo, however keep getting the following error message:
[java] com.sap.mw.jco.JCO$Exception: (102) RFC_ERROR_COMMUNICATION: Connect from SAP gateway to RFC server failed [java] Connect_PM GWHOST=SAPEYEU, GWSERV=sapgw00, ASHOST=SAPEYEU, SYSNR=00 [java] [java] LOCATION SAP-Gateway on host SAPEYEU [java] ERROR connection to host SAPEYEU, service sapgw00 timed out [java] [java] TIME Fri Feb 21 14:04:38 2003 [java] RELEASE 46D [java] COMPONENT NI (network interface) [java] VERSION 34 [java] RC -12 [java] MODULE nixxi.c [java] LINE 751 [java] DETAIL NiPConnect [java] COUNTER 3

This error indicates that JCo cannot see your SAP app server across the network. The app server could be down, you might have the wrong hostname (try the server's IP address), or there is a firewall between JCo and SAP that requires certain open ports to communicate.

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