I found that my solaris WS shutdown itself and I checked it
with the command of dmesg. The log is as follows:

The log message:

Dec 21 01:20:58 slsi198 last message repeated 2 times

Dec 21 01:31:40 slsi198 inetd[225]: [ID 667328 daemon.error] netbios-ns/udp server failing (looping), service terminated

Dec 21 01:42:21 slsi198 last message repeated 2 times

Dec 21 01:53:03 slsi198 inetd[225]: [ID 667328 daemon.error] netbios-ns/udp server failing (looping), service terminated

Dec 21 02:03:08 slsi198 picld[70]: [ID 845468 daemon.crit] SUNW_piclenvd: 'int-amb0' sensor temperature -127 outside safe operating limits (0...70).

Dec 21 02:03:08 slsi198 picld[70]: [ID 669686 daemon.alert] /usr/sbin/shutdown -y -g 60 -i 5 ""

Dec 21 02:03:45 slsi198 inetd[225]: [ID 667328 daemon.error] netbios-ns/udp server failing (looping), service terminated

Dec 21 02:04:23 slsi198 pseudo: [ID 129642 kern.info] pseudo-device: tod0

Dec 21 02:04:23 slsi198 genunix: [ID 936769 kern.info] tod0 is /pseudo/tod@0

Dec 21 02:04:35 slsi198 syslogd: going down on signal 15

Dec 21 02:04:57 slsi198 genunix: [ID 672855 kern.notice] syncing file systems...

Dec 21 02:04:57 slsi198 genunix: [ID 904073 kern.notice] done

Under my understanding, I think this problem is the overheat of CPU.
I wonder if it is necessary to ask for after service of Sun Company.


I wonder why the sun WS shuwdown itsself? if it can become clear from the log message above?

Appreciate any advices, Thanks in advance.

Well aside from the telltale signs of a system overheating there isn't much. You may try a different power supply and if the problem vanishes you have your culprit.

Dec 21 02:03:08 slsi198 picld[70]: [ID 845468 daemon.crit] SUNW_piclenvd: 'int-amb0' sensor temperature -127 outside safe operating limits (0...70).

I wonder if this line shows that the SunWS can not operate while outside is cold.

And pretty cold out there, -127 C !
Is your machine on the moon or something ?

Seriously, it looks like a faulty temperature probe to me.

Under the error log I have given Would u tell me some information about the
trouble?

Thank you in advance!

Well I doubt it's the outside temprature, -127* C is quite a bit colder than any place on this planet, your temprature probe looks to be shot. I would look into replacing it.