Hello,
we have identified two issues in the RHQ 4.5.0 release
1) on upgrade from a previous version some properties may cause Hibernate errors 2) some resources do not show child resources in their inventory tab (but in the left tree).
As 1) is serious if you don't plan to do a fresh install, we ask you to not update from any earlier version to RHQ 4.5.0
We are currently working on fixes and will re-spin the release soon.
Heiko on behalf of the team.