JCO connection problem with router string

[Former Member]

Hi all,

I have a java application, which is connecting to sap via Jco. All is working fine, when I´m calling the sap system without a router string. But when I´m outside of the company network, I need a router string. The connection via sap gui is working fine.

I´m doing the following:

String serverParam = "/H/sapgate.de.emea.csc.com/H/"+txtServer.getText();
		connection = JCO.createClient(txtClient.getText(),    // SAP client
						 			  txtUsername.getText(),  // userid
						 			  "xxx",  // password
									  null,                   // language
						 			  serverParam,    // application server
						 			  txtSystemNo.getText()); 

If I´m doing that without the router string inside the company network, everything is alright. If I try it with the router string, I´m getting the following error:

com.sap.mw.jco.JCO$Exception: (102) RFC_ERROR_COMMUNICATION: Connect to SAP gateway failed

Connect_PM GWHOST=/H/myRouterString/H/ip, GWSERV=sapgw00, ASHOST=/H/myRouterString/H/ip, SYSNR=00

LOCATION SAProuter 37.9 on svswie003

ERROR timeout occured

Note, that the connection over sap gui and router string is working...

Thank you for your help!

Reward points guaranteed

[Former Member]

JCO connection and SAPGui connection are using different ports. I had similar problem.

Ask administrator if proper ports are open. In my case it was port no 3299.