Cause
An Attempt was made to create a spatial index on a column of type other than SDO_GEOMETRY.
An Attempt was made to create a spatial index on a column of type other than SDO_GEOMETRY.
Make sure that the index is created on a column of type SDO_GEOMETRY.
Try the following links for this error:
http://docs.oracle.com/cd/E16655_01/server.121/e26079/e12700.htm
https://community.oracle.com/message/2118177
Browse all solutions to database errors from Oracle, MS SQL, or MySQL