delayed Reboots after security patch application


I am currently working in an environment which doe snot have set
downtime windows. It makes patching quite difficult to schedule as a

I would be interested to know if anyone has had successes or issues
with applying patches which require a reboot in the middle of the week,
and then simply rebooting the servers at the weekend.

We are running Oracle databases, and my only concern is that we apply
the patch and by not rebooting we have one version of a file running in
memory and another version present on disk. If anything were to happen
the system might get itself confused.

Has anyone got any advice on this.


Chris aka BoobBoo