Check PL/SQL http request working.

Check PL/SQL http request working.

SELECT UTL_HTTP.REQUEST('http://www.abc.com') FROM DUAL;

More Info:
http://docs.oracle.com/cd/B19306_01/appdev.102/b14258/u_http.htm
http://www.dba-oracle.com/t_advanced_utl_http_package.htm