Failed to successfully execute the ODCIIndexCreate routine. - Oracle Spatial Indexing - oracle

Question

I have two oracle spatial tables, namely, restaurants and persons. The structures of these two tables are:
CREATE TABLE restaurants(
id NUMBER PRIMARY KEY,
name VARCHAR2(32),
shape SDO_GEOMETRY
);
CREATE TABLE persons(
p_id NUMBER PRIMARY KEY,
p_name VARCHAR2(32),
p_shape SDO_GEOMETRY
);
Then, after populating each table I wanted to create spatial index for each table. The following instruction for restaurants table executed successfully.
CREATE INDEX restaurants_spatial_idx
ON restaurants(shape)
INDEXTYPE IS mdsys.spatial_index;
But, when I wrote for persons table:
CREATE INDEX persons_spatial_idx
ON persons(p_shape)
INDEXTYPE IS mdsys.spatial_index;
This gave me the following error in sql developer 3.2.20:
Error starting at line 340 in command:
CREATE INDEX persons_spatial_idx
ON persons(p_shape)
INDEXTYPE IS mdsys.spatial_index
Error at Command Line:340 Column:14
Error report:
SQL Error: ORA-00955: name is already used by an existing object
00955. 00000 - "name is already used by an existing object"
Cause:
Action:
As this was saying that I have already and index named persons_spatial_idx, I deleted this index using: DROP INDEX persons_spatial_idx; Then when I tried to create the index again, it produced the following error:
Error starting at line 340 in command:
CREATE INDEX persons_spatial_idx
ON persons(p_shape)
INDEXTYPE IS mdsys.spatial_index
Error at Command Line:340 Column:14
Error report:
SQL Error: ORA-29855: error occurred in the execution of ODCIINDEXCREATE routine
ORA-13249: internal error in Spatial index: [mdidxrbd]
ORA-13249: Error in Spatial index: index build failed
ORA-13249: Error in spatial index: [mdrcrtxfergm]
ORA-13249: Error in spatial index: [mdpridxtxfergm]
ORA-13200: internal error [ROWID:AAAFGnAABAAALHpAAA] in spatial indexing.
ORA-13206: internal error [] while creating the spatial index
ORA-13365: layer SRID does not match geometry SRID
ORA-06512: at "MDSYS.SDO_INDEX_METHOD_10I", line 10
00000 - "error occurred in the execution of ODCIINDEXCREATE routine"
*Cause: Failed to successfully execute the ODCIIndexCreate routine.
*Action: Check to see if the routine has been coded correctly.
Thanks for reading.

Answer 1

The message is saying that an object with name PERSONS_SPATIAL_IDX already exists.
You can use the following query to find the existing index:
select *
from all_indexes
where index_name = 'PERSONS_SPATIAL_IDX'