Unix server restart automatically

We have HP K class unix server, It's automatically restart the server.

Is this a question ? or a statement ?

If you are looking for assistance you will need to provide more info.

When you say "automatically restart the server" do you mean it's in a reboot cycle ? or is it rebooting every x minutes ? or has it happened once ?

By server I guess you mean host, not webserver ?

What do the logs say ?

...

This is my questions.

Server is restart automatically .

do you have any cron setup for reboot ? (check the cron entries )

No there is no job schedule for restarting the unix server.

My server details is below.

HP-UX ho B.10.20 A 9000/889 255864301 two-user license

Please tell me in this server where is log saved .

---------- Post updated at 05:43 AM ---------- Previous update was at 05:40 AM ----------

Hi ITkamraj,

Please find my shutdown log .

cat: Cannot ope: No such file or directory
$ cat shutdownlog
18:57  Thu Aug 26, 2010.  Halt:  (by ho!root)
19:14  Thu Aug 26, 2010.  Halt:  (by SAM)
19:15  Thu Aug 26, 2010.  Halt:  (by ho!root)
16:32  Wed Oct 20, 2010.  Reboot:  (by ho!root)
23:30  Tue Nov  9, 2010.  Halt:  (by ho!root)
11:54  Fri Jan 14, 2011.  Halt:  (by ho!root)
11:05  Thu Jan 20, 2011.  Halt:  (by ho!root)
14:31  Thu Feb 17, 2011.  Reboot:  (by ho!root)
09:51  Sat May 14, 2011.  Reboot:  (by ho!root)
15:54  Sat May 14, 2011.  Halt:  (by ho!root)
15:53  Tue May 31, 2011.  Halt:  (by ho!root)
08:03  Thu Jun 30 2011.  Reboot after panic:   , isr.ior = 0'10240001.0'398e707c
11:42  Thu Jun 30 2011.  Reboot after panic:   , isr.ior = 0'10240001.0'390e50b8
13:51  Thu Jun 30 2011.  Reboot after panic:   , isr.ior = 0'0.0'0
03:17  Sun Jul 03 2011.  Reboot after panic:   , isr.ior = 0'240028.0'6d5b4670
03:42  Mon Jul 04 2011.  Reboot after panic:   , isr.ior = 0'240028.0'6d5b4670
$

Interesting...
Your box doesnt "restart" as you think but more "reboots" after a crash...

08:03  Thu Jun 30 2011.  Reboot after panic:   , isr.ior = 0'10240001.0'398e707c
11:42  Thu Jun 30 2011.  Reboot after panic:   , isr.ior = 0'10240001.0'390e50b8
13:51  Thu Jun 30 2011.  Reboot after panic:   , isr.ior = 0'0.0'0
03:17  Sun Jul 03 2011.  Reboot after panic:   , isr.ior = 0'240028.0'6d5b4670
03:42  Mon Jul 04 2011.  Reboot after panic:   , isr.ior = 0'240028.0'6d5b4670
$

So you are left with a hard task of diagnose and find what makes the server panic

You do know how I suppose?

What do you have in /var/tombstones ?

Hello,

Check /var/tombstones/......

It will indicate if the panic is CPU, Memory or whatever is causing your
reboots. This should be shipped back to HP for analysis.

Regards

:wall:There is no such file /var/tombstones. Please also find the attachment.

/var/tombstones is a directory...
I see no attachments...
What is your knowledge of HP-UX? Do you have the support plus CD ? (latest would be Dec 2001), I see no other alternative than to use q4 debugger. Is there nothing in /var/adm/syslog/syslog.log? have you tried to use stm?

FYI
The text file /var/tombstones/ts99 contains basic information about the current crash.
Also read in detail:
/var/adm/syslog
(however a bad crash can be missing from syslog).

Also look at what is in directory:
/var/adm/crash
Beware that multiple crashes can fill the /var partition which can cause a situation more serious than the original fault. Be prepared to clean old crashes from this directory.

Basic advice is to seek advice from HP (or if you have not got a HP maintenance contract, try the HP ITRC board). First impressions are that you have a hardware fault. As others advise the "stm" utilities will help diagnose the fault but you will need guidance to run them and interpret the results.

Addendum: I notice that this is an antique version of HP-UX (10.20) and a two-user licence. This imples some sort of old HP workstation. Don't forget to mention exactly what hardware you have and cut/paste any relevant error messages from /usr/adm/syslog exactly as they appear.

Addendum: Please post the output from a basic hardware inventory:

ioscan -fn