Home » Infrastructure » Linux » yum update for OL database and apps servers (OL7.7, DB19, ORDS 19)
yum update for OL database and apps servers [message #678821] Thu, 16 January 2020 10:48 Go to next message
John Watson
Messages: 8961
Registered: January 2010
Location: Global Village
Senior Member
I have been asked to apply the latest Linux security patches to some OL 7.7 systems. 
yum check-update --security
tells me that there a 28 updates needed. Some of them are kernel updates, so they will need a reboot afterwards.

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
or even 
yum downgrade redhat-release
but RedHat themselves seem to say do not do that with kernel packages,
https://access.redhat.com/solutions/29617

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.

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Re: yum update for OL database and apps servers [message #678823 is a reply to message #678821] Thu, 16 January 2020 11:27 Go to previous message
John Watson
Messages: 8961
Registered: January 2010
Location: Global Village
Senior Member
Now I see that this does say always relink after an OS patch,
https://docs.oracle.com/en/database/oracle/oracle-database/19/unxar/configuring-oracle-database.html#GUID-1073475C-2B8A-4153-94AF-ECC 66EDF8671
so that is clear. However, I still wonder how risky this process is.

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