Also, this may sound stupid.....but I only downloaded the sql developer tool. I recently took an sql course and have the scripts to create a database. Do I need to download Oracle as well....in our course we were told all we needed was the developer tool?
ok, so now I've downloaded oracle 11g release 2....trying to run the install and I'm prompted for a proxyserver....from what I read, I tried localhost - didn't work, also the port is 80....tried 8080...not working.
you are asked to provide proxy becuase installer is not able to connect to internet, You can just ignore the fields on the first screen, . If you click next you will be given a warning "you have not provided email address" just say yes and continue.
For easier installation you can try this as well http://www.oracle.com/technetwork/products/express-edition/downloads/index.html
It sounds like you've figured out the problem, but I wanted to share this link for others that come here with the same problem or question