PostgreSQL has been installed from the Fedora repo, and has been optimized for InterMine according to http://intermine.readthedocs.io/en/latest/system-requirements/software/postgres/postgres/
The main ramification of this is that the default database encoding, stored in template1, is SQL_ASCII. If you need to create a UTF-8 database, do this:
$ createdb -T template0 -E UTF8 your-utf8-db-name-here
This says use template0 (which doesn't specify an encoding) with UTF-8 encoding, rather than the normal template1 (which specifies SQL_ASCII).