Unable to create index ..can anyone help me

Question

Dan,
I have created the following table and the values are as following,
create table zonetemp(
name varchar2(15),
SHAPE MDSYS.SDO_GEOMETRY)
insert into zonetemp values('Raju',
MDSYS.SDO_GEOMETRY(2003,null,null,
MDSYS.SDO_ELEM_INFO_ARRAY(1,1003,3),
MDSYS.SDO_ORDINATE_ARRAY(10,30,40,10)))
insert into zonetemp values('Kalpan',
MDSYS.SDO_GEOMETRY(2003,null,null,
MDSYS.SDO_ELEM_INFO_ARRAY(1,1003,3),
MDSYS.SDO_ORDINATE_ARRAY(0,20,40,0)))
insert into zonetemp values('Chetan',
MDSYS.SDO_GEOMETRY(2003,null,null,
MDSYS.SDO_ELEM_INFO_ARRAY(1,1003,3),
MDSYS.SDO_ORDINATE_ARRAY(0,40,40,20)))
commit
I am unable to index the table.
exec geocoder_http.setup_locator_index('ZONETEMP','SHAPE');
ERROR at line 1:
ORA-29855: error occurred in the execution of ODCIINDEXCREATE routine
ORA-13219: failed to create spatial index table [ZONET_SHAPE_IDX_HL13N1$]
ORA-06512: at "MDSYS.SDO_INDEX_METHOD", line 7
ORA-06512: at line 1
ORA-06512: at "MDSYS.GEOCODER_HTTP", line 168
ORA-06512: at line 1
My Query :
SELECT NAME FROM ZONETEMP A
WHERE SDO_FILTER(A.SHAPE,MDSYS.SDO_GEOMETRY(2001,null,MDSYS.SDO_POINT_TYPE(20,20, 0), NULL, NULL)),'QUERYTYPE='WINDOW') ='TRUE'
Basically these gemoteries are polygon.
what i want to do is query this table with the operator SDO_FILTER with reference geomotry as POINT and find the corresponding polygon in which it is found.
Is it Possible?Is this a valid Query?
N.B for the ploygon definations one can asssume a gird layout of 40*40.
null

Answer 1

Hi Raju,
There are a few things I would change below.
The first is that optimized rectangles (which you are using) need to be specified as lower left then upper right, assuming the lowest values are in the lower left corner of the coordinate system.
The way you've specified them is upper left, lower right which will not work.
The second thing I would change is your create index statement. You shouldn't be using locater to create the index - locator is a separate product should be used only with point geometries.
Your create index statement should look something like this:
create index zonetemp_sidx on zonetemp(shape)
indextype is mdsys.spatial_index
parameters ('sdo_level=NN');
where NN above is an integer number representing the tiling level you are going to use for the index. This is workload dependent, but I will give you a range of 8-12 to start with - you can protype using real data and figure out what gives you the best performance - if it is 12 you may want to go higher.
Also, you will have had to preload user_sdo_geom_metadata.
Finally, your query looks good, although I would change it slightly to set the third ordinate to NULL rather than 0, i.e.:
SELECT NAME
FROM ZONETEMP A
WHERE SDO_FILTER (A.SHAPE,
MDSYS.SDO_GEOMETRY(2001,null,
MDSYS.SDO_POINT_TYPE(20,20,NULL),
NULL, NULL)),'QUERYTYPE='WINDOW')
='TRUE'
Hope this helps,
dan