create or replace procedure Usr_callWebservice(
   P_ROTA IN VARCHAR)
is
   req utl_http.req;
   res utl_http.resp;
   url varchar2(4000) := 'http://192.168.254.200/backend/service/index.php/';
   name varchar2(4000);
   buffer varchar2(4000);
   content varchar2(4000) := '{"teste":"oi"}';
   response varchar2(4000);
   biggerResponse CLOB;
begin
   url := url||P_ROTA;

   select UTL_HTTP.REQUEST(url)
     into biggerResponse
     from dual;
end;
/

-- VERSAO --
BEGIN ATUVEROBJ('Usr_callWebservice','6.35.038'); END;
/
