Integration

I was using Map viewer URL provided by Oracle. We use these following two URL's

Map viewer URL : http://elocation.oracle.com/mapviewer
Geocoder URL : http://elocation.oracle.com/geocoder/gcserver

Sometimes Map Viewer URL when tested , the connection says 'Specified URL Connection is not accessible'. Bcoz of this i could not able to display color theme on the map resulted in error saying Map Viewer URL not found.
so later from someones help i understood tat it is for DEMO purpose so i installed OC4J and deployed mapviewer.ear file. i could able to bring up the mapviewer which i deployed.
i have two doubts here.
1) Do i need to have any database/schema that has all themes ,styles and other related map data in order to use it for the color theme map in ADF geographic components?
2) what URL should i need to give for Geocoder URL?