Automatic Auxilliary TSPITR - db_name change to different value ?

I am trying to do an automatic auxilliary instance tspitr (11.2.0.2 db), but want to specify a different db_name.  When I run the automatic tspitr, it creates the auxilliary instance with the same db_name as production (in my case PROD).  It also assigns a random 4 char db_unique_name, so that it is possible to see the name of the temporary instance on the box, but my problem is that if any of my users try to connect to PROD through their applications, they can potentially be connecting to my Auxillary database because it is running with the same db_name.  Is