First, typing in caps is considered yelling in a forum.
There's no need to yell.
If you're restarting Tomcat, then you're not talking about a hot deploy.
'Hot' means that that the item (usually a web application) is deployed without having to restart the container.
You can certainly set up two datasources in a single instance of Tomcat as long as they have unique names.
Once you've done that, your app can decide which of them to use by using the appropriate JNDI
string when getting a connection.