If you get an error saying Port 1098 already bound when you start JBoss Application server, it means this port is being used by some other applications already. Normally these applications can be Firefox browser or MSN/Yahoo messenger. You can close these applications and try to start the server again. If the server starts successfully, you can again start these application and it will not cause any problems for app server.
To find out which application is using specific port, use the following command on windows..
netstat -b
If this doesnt work out, and you cant find which application is using port 1098, then you might need to change the port number in the JBoss configuration files. Final options is is to restart the machine and make sure you start the server before starting any other application. Of course this works only if the application which uses port 1098 doesnt start automatically.
Jboss uses 1099 port for jnp by default. So if any of your application using this port, then also jboss might not start successfully. So apart from 1098, look for even 1099 port if it is being used by other applications.
