After installing APEX, without installing anything else, you are suppose to be able to go to a local browser, on the same server as the APEX installation, and enter localhost:8080/pls/apex (or localhost/apex - I tried both) and have it go to the Workspace login. These are the steps that I executed:
1.) Installed APEX 4.2 in an 11g database
2.) Make sure the PORT is set to 8080, if not - set it.
SQL> SELECT DBMS_XDB.GETHTTPPORT FROM DUAL;
3.) Go to localhost:8080/pls/apex in Chrome browser.
My understanding is that the above would be using EPG - Embedded PL/SQL Gateway
What can I test, check, look at to debug this?