Search notes:

ORA-00968: missing INDEX keyword

Trying to create a unique bitmap index

In Oracle, it's not possible to create a unique bitmap index. When trying to do so, Oracle throws an ORA-00968:
drop table tq84_uniq_bmp;

create table tq84_uniq_bmp (
   id   number,
   val  varchar2(10)
);

--
-- Following statement throws error:
--
create unique bitmap index tq84_uniq_bmp_ix on tq84_uniq_bmp(id);

drop table tq84_uniq_bmp;

See also

Other Oracle error messages

Index