[Sunhelp] How can I get the reason for server unexpected rebooting

[Dennis L. Lund]

Did you run prtdiag -v?  There may be some info there.

With psrinfo, if you see that you have CPU's that are off-line, it may be
because the CPU failed.

grep for things like fatal or failed in /var/adm messages:

cat /var/adm/messages | egrep -v egrep | egrep -i  'panic|fatal|notice|savecore|core|error' >> file

This will get anything upper or lower case that match any of these words.
cat file to see if anything stands out.

Dennis L. Lund