Dropping index gives ORA-29861

Question

Hello
We have an application which reads data from MapInfo Spatialware using MapInfo Professional and upload this data into Oracle Spatial tables using MapInfo Easy Loader utility.
The constraint is that tables in oracle spatial must not be dropped. So we have written a stored procedure which queries unique and spatial indexes of a feature table, then it drops them and truncates the table.
Easy loader then uploads fresh data into these truncated tables and re creates spatial and unique indexes.
This solution is working fine except for 1 feature table "ZONE". The stored procedure is unable to drop the indexes and error log shows error "ORA-29861: domain index is marked LOADING/FAILED/UNUSABLE".
I looked into discussion forums and they say to drop the indexes specifying keyword "FORCE" but how can i query whether index is corrupt and i must force drop it. Index state is all VALID which i check them...
below is the stored procedure....
CREATE OR REPLACE
PROCEDURE Spa_Initializetables
     (     TNAME          IN     VARCHAR2,
     SPATIALCOL          IN     VARCHAR2,
          ERROR_CODE OUT     NUMBER,
          ERROR_MESSAGE     OUT     VARCHAR2
IS
CURSOR c1 IS
SELECT * FROM user_sdo_index_info WHERE table_name LIKE UPPER(TNAME) AND column_name LIKE UPPER(SPATIALCOL);
BEGIN
--Truncate the given table
EXECUTE IMMEDIATE 'TRUNCATE TABLE ' || TNAME;
--Loop through all the indexes found and drop them one by one
FOR cur_ts IN c1 LOOP
--DBMS_OUTPUT.PUT_LINE(cur_ts.index_name);
EXECUTE IMMEDIATE 'DROP INDEX '|| cur_ts.index_name;
END LOOP;
ERROR_CODE := 0;
EXCEPTION
     WHEN OTHERS THEN
     ERROR_CODE          :=     1;
     ERROR_MESSAGE     := SQLERRM;     
END Spa_Initializetables;
please let me know what best i can do
Regards
Sam

Answer 1

Sorry, but I can't simulate this troulbe. look:
create table a (id number, lmao mdsys.sdo_geometry)
INSERT INTO mdsys.sdo_geom_metadata_table (SDO_OWNER,SDO_TABLE_NAME,SDO_COLUMN_NAME,SDO_DIMINFO,SDO_SRID)
VALUES ('GIS','A','LMAO',SDO_DIM_ARRAY(
SDO_DIM_ELEMENT('X', -180,180, 5e-4),
SDO_DIM_ELEMENT('Y', -180,180, 5e-4)), NULL);                         
create index a_g_idx on a(lmao) indextype is mdsys.spatial_index;
insert into a values (1,SDO_geometry(2003,NULL,NULL,SDO_elem_info_array(1,1003,3),SDO_ordinate_array(1,1, 2,2)));
commit;
truncate table a;
insert into a values (2,SDO_geometry(2003,NULL,NULL,SDO_elem_info_array(1,1003,3),SDO_ordinate_array(1,1, 2,2)));
drop table a;
No errors :(
I have 10.2.0.3
May be i didn't understood you ?