Convert Spatial into Google Earth KML - ORA06512

Question

Hi!
Theres my procedure:
create or replace procedure generateKmlPoints
is
y number;
begin
y:=1;
owa_util.mime_header('application/vnd.google-earth.kml+xml', true, 'ISO-8859-1');
htp.p('<?xml version="1.0" encoding="UTF-8"?>
             <kml xmlns="http://earth.google.com/kml/2.0">
                <Document>
                  <description>Cities</description>
                <Folder>');
for x in (select initcap(a.ort) name, a.geo_location.sdo_point.x lon, a.geo_location.sdo_point.y lat from e_30019 a
    where a.dbk = '301920010110165415550001' )
loop
htp.p('<Placemark>');
  htp.p('<name>'||x.name||'</name>');
  htp.p('<Point>');
    htp.p('<coordinates>'||x.lon||','||x.lat||', 0</coordinates>');
  htp.p('</Point>');
  htp.p('</Placemark>');
end loop;
htp.p('</Folder></Document></kml>');
end;Error Message:
SQL> execute generateKmlPoints
BEGIN generateKmlPoints; END;
FEHLER in Zeile 1:
ORA-06502: PL/SQL: numerischer oder Wertefehler: Schl³sselwert NULL auf
Indextabelle
ORA-06512: in "SYS.HTP", Zeile 1536
ORA-06512: in "SYS.HTP", Zeile 1714
ORA-06512: in "NAVTEQ.GENERATEKMLPOINTS", Zeile 9
ORA-06512: in Zeile 1
Message was edited by:
yoda

Answer 1

Now I tried another table, same error:
create or replace procedure TestKml
is
y number;
begin
y:=1;
owa_util.mime_header('application/vnd.google-earth.kml+xml', true, 'ISO-8859-1');
htp.p('<?xml version="1.0" encoding="UTF-8"?>
             <kml xmlns="http://earth.google.com/kml/2.0">
                <Document>
                  <description>Cities</description>
                <Folder>');
for x in (select initcap(a.poi_name) name, a.geom.sdo_point.x lon, a.geom.sdo_point.y lat from p_hospital a
    where a.geom.get_gtype()=1 )
loop
htp.p('<Placemark>');
  htp.p('<name>'||x.name||'</name>');
  htp.p('<Point>');
    htp.p('<coordinates>'||x.lon||','||x.lat||', 0</coordinates>');
  htp.p('</Point>');
  htp.p('</Placemark>');
end loop;
htp.p('</Folder></Document></kml>');
end;