RedHat 6.0 contains postgresql-6.4.2-3.i386.rpm postgresql-clients-6.4.2-3.i386.rpm postgresql-devel-6.4.2-3.i386.rpm but not postgresql-data-6.4.2-4.i386.rpm which is necessary to get it up and running.
*** This bug has been marked as a duplicate of 2721 ***