<servlet-mapping xmlns="http://xmlns.oracle.com/xdb/xdbconfig.xsd">
  <servlet-pattern>/i/*</servlet-pattern>
  <servlet-name>PublishedContentServlet</servlet-name>
</servlet-mapping>

<servlet xmlns="http://xmlns.oracle.com/xdb/xdbconfig.xsd">
  <servlet-name>PublishedContentServlet</servlet-name>
  <servlet-language>C</servlet-language>
  <display-name>Unauthenticated File Access Servlet</display-name>
  <description>Servlet for files for unauthenticated users</description>
  <init-param>
    <param-name>RootFolder</param-name>
    <param-value>/images</param-value>
    <description>RootFolder</description>
  </init-param>
  <security-role-ref>
    <role-name>anonymousServletRole</role-name>
    <role-link>anonymousServletRole</role-link>
  </security-role-ref>
</servlet>

declare 
  newconf xmltype;
begin
  select Updatexml(dbms_xdb.cfg_get(), '/xdbconfig/sysconfig/protocolconfig/ftpconfig/ftp-port/text()' ,  2111 ) 
  into newconf
  from dual;
  
  dbms_xdb.cfg_update(newconf);
end;