Solaris Live Upgrade is an excellent way to manage Solaris operating system upgrades and patches. Live Upgrade allows the system admin to upgrade or patch a running system with the only downtime being the server reboot once the upgrade or patch is complete. Live Upgrade accomplishes this "trick" by employing boot environments.
Most Solaris recomended patch clusters come in either 32- or 64-bit versions. How do you find out which one is appropriate for your platform?
This article describes the process of applying a Solaris recommended patch cluster, or patchset as it is now called. This procedure applies only to Solaris 10 servers that have no zones or boot environments configured.