The software described in this documentation is either in Extended Support or Sustaining Support. See https://www.oracle.com/us/support/library/enterprise-linux-support-policies-069172.pdf for more information.
Oracle recommends that you upgrade the software described by this documentation as soon as possible.
If you want to roll back changes to your system, you can mount a snapshot as the root file system by specifying its ID as the default subvolume, for example:
# btrfs subvolume set-default 260 /Reboot the system for the change to take effect.