When you installed Oracle XE by default in your pc (win and linux), the XE have one utility(the web-app service from oracle is running. to access by WEB using the port http:8080, http://127.0.0.1:8080/apex user: SYSTEM and password: “of the installation”, well if you dont have any other service running on the 8080 port, works fine!!! but if you have………. for example (web server – tomcat(8080) or any other running on the same port), you should change one of this, the tomcat port or the second way change the oracle port:
The second way:
The steps to change oracle http Port:
Open the command line of the oracle:
SQL>Enter the password"of the installation"