Since I didn't find time to write, I figured out I might reference some links that helped me a lot in my daily tasks, also I wanted to document these posts for my own reference, better than bookmarks, people can benefit from it, searchable and categorized. I will start with Oracle APEX installation. Apache as Proxy server. Installing Oracle XE, ORDS and Apex on CentOS Oracle Database XE, APEX, ORDS, Tomcat and httpd on CentOS 7 Install and Configure Oracle Application Express with Oracle REST Data Services and Apache Tomcat I will update the list once I found another.