The Oracle Live Upgrade document* states that these patches need to be done before doing the LiveUpgrade: *Document 1004881.1, "Solaris 10 5/08 (Update 5) or later:"
119254-LR Install and Patch Utilities Patch 121430-LR Live Upgrade patch 121428-LR SUNWluzone required patches 138130-01 vold patch 146578-06 cpio patch (The most recent replacement for this patch is 148027-03)
Dependencies for the last patch:
Patch-ID# 142909-17 Synopsis: SunOS 5.10: kernel patch (needs reboot) Patch-ID# 137137-09 Synopsis: SunOS 5.10: kernel patch (needs reboot)
146670-02 (SunOS 5.10: libproject patch, needs reboot) 147774-01 automountd patch
7 patches need to be done before Live Upgrading the server with lucreate, luupgrade and luuactivate.
I have been told that a Live Upgrade from update 8 to update 10 can be done with 5 minutes downtime on a ZFS server. With the reboot, it might take up to one hour and a half as the luupgrade process is time-consuming.
What is the truth? Should I do the Live Upgrade without the reboot for the pre-upgrade patches (142909-17, 137137-09) so I can do the lucreate/luupgrade/luactivate while the server is running and have 5 minutes downtime or do the reboot after the patches and accept that downtime might take up to 2 hours.