Re: All RAC Nodes reboot without log-entry

From: <>
Date: Thu, 17 Jan 2008 12:53:37 +0100
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More Information and replies:

The RAC is a new setup. The Nodes with OS-only where running for 4 weeks without issue before. I installed the RAC last week.

There is no cron or something. Only me and 2 administrators have access to the system.
dmesg will only show entries starting with the last boot. So there is no chance do get information from the affected system. I'm with you about booting both nodes is not a common Cluster behavior.

There is nothing seen from the OS that indicates a Interconnect issue. I have no access to the network and power supply, as I'm remote. The local admins say there is no issue, too.

There are ASM and DB instances, but nothing in the logs. The logs show normal behavior till they report the startup of the instances after the reboot.

regards, Björn

Dan Norris schrieb:
> In my past days when I was much more mischevious than I am now (or
> maybe not :), I once set a cron job to reboot a system once a day. It
> was on a SGI system sitting on a desk in a classroom at Silicon
> Graphics' training facility, so I didn't do it to your system, but it
> might be worth changing all the passwords just for good measure.
> You might also check the "dmesg" output to see if there's something
> being reported in there that didn't make it into the logfiles. I
> haven't ever seen Clusterware reboot a node without logging a message
> about it *somewhere* (one of the places you said you looked), so my
> theory is that this isn't caused by Oracle software. Therefore, I'd
> investigate something in hardware or OS. Odd that they both
> reboot--that's not a common Clusterware method to resolve anything
> either.
> I presume that Oracle Clusterware is the only cluster manager. if you
> also have VCS or SunCluster, obviously you need to check on their logs
> as well.
> Dan
> ----- Original Message ----
> From: "" <>
> To:
> Sent: Wednesday, January 16, 2008 10:01:53 AM
> Subject: All RAC Nodes reboot without log-entry
> Hello,
> I'm facing the problem, that all my RAC nodes (2 Node Cluster
> on Solaris 10, Oracle CRS + ASM) reboot at the same time without any log
> entries in /var/etc/messages, /var/log/syslog and all log files under
> $ORACLE_CRS_HOME/log/...
> The cluster is a fresh installation. Any suggestions? Where can I look
> further?
> Kind regards,
> Björn
> --

Received on Thu Jan 17 2008 - 05:53:37 CST

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