solaris 10 installation / upgradation logs locations ?

Installation log location
        - /a/var/sadm/system/logs/upgrade_log (before reboot)
        - /var/sadm/system/logs/upgrade_log (after reboot)
Please examine the file:
        - /a/var/sadm/system/data/upgrade_cleanup
It contains a list of actions that may need to be performed to complete
the upgrade. After this system is rebooted, this file can be found at:
        - /var/sadm/system/data/upgrade_cleanup
Upgrade complete
Executing SolStart postinstall phase...
Executing finish script "patch_finish"...

Finish script patch_finish execution completed.
Executing JumpStart postinstall phase...
The begin script log 'begin.log'
is located in /var/sadm/system/logs after reboot.
The finish script log 'finish.log'
is located in /var/sadm/system/logs after reboot.

Launching installer. Please Wait...