i get the following error

*
ERROR at line 1:
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 R-tree: [mdrcritbl]
ORA-13231: failed to create index table [] during R-tree creation
ORA-29400: data cartridge error
ORA-01031: insufficient privileges
ORA-06512: at "MDSYS.SDO_INDEX_METHOD_9I", line 7
ORA-06512: at line 1
ORA-06512: at "ITN_NEW.P_2", line 3
ORA-06512: at line 1