ORA-13285 again

Question

Why would this query result in this error? Usually it occurs when
the coordinate systems for the two tables are different, but in
this case there is only one spatial table, which I'm looking for
overlaps within where both features meet certain criteria.
Select /*+ NO_MERGE */ a1.*
from NonSpatial a1, NonSpatial a2, SpatialTable b1, SpatialTable b2
where (((a1.ID >= '300') and (a1.ID < '400')))
and b1.IsCurrent = -1
and (b1.ID = a1.ID)
and ((sdo_relate(b1.geoloc, b2.geoloc, 'mask=ANYINTERACT querytype=JOIN') = 'TRUE')
and (b1.ID <> b2.ID))
and (((a2.ID >= '300') and (a2.ID < '400')))
and b2.IsCurrent = -1
and (b2.ID = a2.ID);

Answer 1

select a.geoloc.sdo_srid from spatialtable a where a.geoloc.sdo_srid <> the_srid_you_are_expecting.
If the sdo_srid field isn't set, drop the spatial index,update the geometries, then recreate the spatial index.
This would be much faster than updating the geometries with the spatial index intact.