Folks, I need help on our performance testing as I am fairly new to this area.

Our application is being deployed through weblogic server. When I run my script with 30 concurrent Vusers it passes, but with 40 or more I get an error in the 'Scenario Status' - "Error: failed to connect to server.....Connection refused.

Could this be a loadrunner configuration issue? I am not seeing the error in the weblogic console.

Thanks in advance.