create or replace procedure get_static_resource  is
  /* 
  Simple wraps wwv_flow.resolve_friendly_url for using mod_owa with Apex 5 
  */   
  l_location                varchar2(30)  := '/apex'; -- equals to apache "Location" parameter,
                                                      -- change it according mod_owa location
  l_static_resources_prefix varchar2(30)  :=  'r';    -- equals to OwaDocPath mod_owa parameter,
                                                      -- do not change 
  l_url varchar2(200); 
 begin
  l_url := substr(
    sys.owa_util.get_cgi_env('REQUEST_URI'),
    length(l_location||'/'||l_static_resources_prefix) + 1
    );
  wwv_flow.resolve_friendly_url(l_url);
 end;

create public synonym get_static_resource for YOUR_SCHEME.get_static_resource;
grant execute on YOUR_SCHEME.get_static_resource to APEX_PUBLIC_USER;

AddType text/xml xbl
AddType text/x-component htc
<Location /apex>
    Options  None
    SetHandler       owa_handler
    OwaUserid        APEX_PUBLIC_USER/**********
    OwaNLS   RUSSIAN_RUSSIA.AL32UTF8
    OwaDiag  COMMAND ARGS TIMING ERROR
    OwaLog   /var/log/apache2/mod_owa.log
    OwaPool  20

    # Add this two parameters for Apex 5 static support
    OwaDocPath      r
    OwaDocProc      get_static_resource

    OwaDocTable     WWV_FLOW_FILE_OBJECTS$ BLOB_CONTENT
    OwaUploadMax 10M
    OwaCharset "UTF-8"
    OwaCharsize 4
    order    deny,allow
    allow    from all
</Location>