How to change the port used with the web interface to Oracle XE
Create and execute the following SQL command. I'm choosing port 8081 in this example as Tomcat uses 8080.
begin
dbms_xdb.sethttpport('8081');
end;
After running this command, you'll have to log back in. (You won't see any results because the port changed.)
Log back in at http://localhost:8081/apex/ »
References

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