I have been asked to apply the latest Linux security patches to some OL 7.7 systems.
tells me that there a 28 updates needed. Some of them are kernel updates, so they will need a reboot afterwards.
yum check-update --security
The DB servers are running DB 19 with the April 2019 RU. Other machines are running ORDS deployed to Tomcat, and the update does include updates to the OpenJDK. My question is whether anyone has had problems following this kind of update. I have been looking into backing out the updates if there are problems, and some sites say no problem just give it
yum downgrade whatever-package-it-was
but RedHat themselves seem to say do not do that with kernel packages,
yum downgrade redhat-release
I am also not clear on whether one needs to relink any of the Oracle code after the update.
What is the general practice for this sort of update? Do just do it without thinking because it is always safe, or is it a risky procedure?
Thank you for any insight.