Database Software

Hi,

I am having the ORA-13050: unable to construct spatial object error when running the following query:

Create table FAB.DOSSIER_E_GEOMETRIE_TMP NOLOGGING as
  select /*+ FIRST_ROWS(10) INDEX(d PK_DOSSIER) */
         d.*
       , 'TEK' "BRON"
       , (select sum( round(mdsys.sdo_geom.sdo_area(tek.geometrie, 0.005), 2) )
                  from VRO.TEKENING tek, vro.DOSSIERTEKENING dt
                  WHERE dt.TEKENING_ID = tek.id
                  and   dt.DOSSIER_ID = D.DOSSIER_ID
                  and   DT.DATUMAFVOER is null
                  and tek.DATUMAFVOER is null
                  --and tek.NIVEAU = 0
                  group by dossier_id) "OPPERVLAK_GEOM"
       , (select SDO_AGGR_UNION(MDSYS.SDOAGGRTYPE(GEOMETRIE, 0.001))
                  from VRO.TEKENING tek, vro.DOSSIERTEKENING dt
                  WHERE dt.TEKENING_ID = tek.id
                  and   dt.DOSSIER_ID = D.DOSSIER_ID
                  and DT.DATUMAFVOER is null
                  and tek.DATUMAFVOER is null
                  and tek.NIVEAU = 0
                  group by dossier_id) "GEOMETRIE"
    from vro.dossier d
   where D.STATUS <> 'H'
     and D.DOSSIERLETTER in ('E','EW')
     and d.DOSSIER_ID in (select DOSSIER_ID from vro.dossiertekening dt2, vro.tekening tek
                                     where dt2.DOSSIER_ID = d.DOSSIER_ID
                                       and dt2.DATUMAFVOER is null and dt2.TEKENING_ID = tek.ID and tek.DATUMAFVOER is null)

The query was made by people who worked before me. There is no documentation. It should create a table and fill with data. It had been running fine but stopped working suddenly. What could be the issue?