Donwngrading postgresql-jdbc from 42.2.14-1.el8 to 42.2.3-3.el8_2 (hint from failing ovirt 4.5 deployment https://lists.ovirt.org/archives/list/users@ovirt.org/thread/FA6BLIAIYY7G...) did the trick. sincerely André-Sebastian Liebe Zukunftslabor gematik GmbH | Friedrichstr. 136 | 10117 Berlin Tel +49 30 40041-197 | Fax +49 30 40041-111 andre.liebe(a)gematik.de | www.gematik.de   Amtsgericht Charlottenburg HRB 96351 Geschäftsführer: Dr. med Markus Leyck Dieken -----Ursprüngliche Nachricht----- Von: Liebe, André-Sebastian Gesendet: Freitag, 6. Mai 2022 07:46 An: users(a)ovirt.org Betreff: could not start ovirt-engine: TagsDirector.init() fails Hello list, I'm unable to start ovirt-engine after switching from CentOS 8 to CentOS 8-stream, doing a system update and a reboot. A previously done ovirt update from 4.4.9 to 4.4.10 (w/o system reboot but with service restart) went smoothly, so I guess it's somehow caused by one oft he centOS updates? The root cause logged in server.log reads: But according to ovirt-engine-setup-*.log a GettagsByparent_id(v_parent_id UUID) function ist created duging engine-setup (which I run after dnf update). When searching google for " org.ovirt.engine.core.bll.TagsDirector.init()" and "'gettagsbyparent_id" I got some results hinting for a faulty PosgreSQL jdbc driver from 2018 Any hints? sincerely André-Sebastian Liebe Zukunftslabor gematik GmbH | Friedrichstr. 136 | 10117 Berlin Tel +49 30 40041-197 | Fax +49 30 40041-111 andre.liebe(a)gematik.de | www.gematik.de   Amtsgericht Charlottenburg HRB 96351 Geschäftsführer: Dr. med Markus Leyck Dieken