ASSUMPTION: you are trying to connect to a WAR app.
I suspect that, assuming there are no errors on your servers output log, this may be down to the contaxt name you have given your application.
Consider the following
I have an application called MONKEE, and inside it there is a WAR called, imaginatively, '
Struts Blank Application', which has a context-name of 'strut' (ok, it's a bad name, but I was learning, ok!). So, to reach this I would use as my URL
I'm amking the assumption that your context-root is not called 'dboWebApp' here!
Look at your servers output and try swapping my context-root as highlighted above with the one you deployed.
hope this helps