When I run "last" on Solaris 11, I get (e.g.):
# last -n 300 -a | grep oracle | head
root      sshd         Mon Aug 20 03:48 - 03:48  (00:00)   oracle-oem-oc-mgmt-cowsvpsys07
root      sshd         Sun Aug 19 16:56 - 16:56  (00:00)   oracle-oem-oc-mgmt-cowsvpsys07
root      sshd         Sun Aug 19 07:32 - 07:32  (00:00)   oracle-oem-oc-mgmt-cowsvpsys07
root      sshd         Sat Aug 18 21:18 - 21:18  (00:00)   oracle-oem-oc-mgmt-cowsvpsys07
root      pts/3        Sat Aug 18 13:17 - 12:55 (1+23:37)  oracle-oem-oc-mgmt-cowsvpsys07
root      sshd         Sat Aug 18 13:17 - 12:55 (1+23:37)  oracle-oem-oc-mgmt-cowsvpsys07

My question is why is there sometimes a pts AND sshd, and other times just the sshd? What does that mean?