How to determine the hostname in Oracle APEX? -

i want create links in oracle apex application itself. changes in development envireonment , production environment. need way determine current hostname , port. function can me?

the necessary method in apex_util-package , called host_url. parameter, can extend output:

given hostname example.com , port 5883.

function call                    |  result ---------------------------------|----------------------------------- apex_util.host_url()             |  http://example.com:5883 apex_util.host_url('script')     |  http://example.com:5883/pls/apex/ apex_util.host_url('imgpre')     |  http://example.com:5883/i/ 

the result value imgpre depends on configuration @ application properties > user interface > general properties > image prefix.