ORA-14263

Error: ORA-14263: new subpartition name must differ from that of any other subpartition of the object

Causa: User entered ALTER TABLE/INDEX RENAME SUBPARTITION specifying new_subpartition_name which is identical to the name of some existing subpartition of the object.

Acción: Ensure that the new subpartition name is different from the name of any (including the one being renamed) existing subpartition of a given table or index.