Hi,
Unfortunately we have just found that latest release of postgresql-jdbc-42.2.14-1 breaks existing oVirt Engine 4.4 and 4.5 installations running on CentOS Stream.
The workaround is to downgrade to previous version, for example postgresql-jdbc-42.2.3-3 should work fine.

Here are detailed instructions:

1. If you have already upgraded to postgresql-jdbc-42.2.14-1, please downgrade to previous version:

    $ dnf downgrade postgresql-jdbc
    $ systemctl restart ovirt-engine

2. If you are going to upgrade your oVirt Engine machine, please exclude postgresql-jdbc package from upgrades:

    $ dnf update -x postgresql-jdbc

We have created https://bugzilla.redhat.com/2077794 to track this issue, but unfortunately we don't have a fix yet.

Regards,
Martin

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Martin Perina
Manager, Software Engineering
Red Hat Czech s.r.o.