Re: All RAC Nodes reboot without log-entry

From: Dan Norris <>
Date: Thu, 17 Jan 2008 11:45:09 -0800 (PST)
Message-ID: <>

In absence of any solid theories, I'd start by shutting down one of the nodes and seeing if you still experience crashes. Then I'd repeat the test with the other node to see if somehow one node has a problem. If both nodes crash while running solo, then I would say that we should put clusterware low on the suspect list. That is, unless it has intermittent problems accessing its OCR and/or voting disk(s). Then, maybe it'd have a problem. All things equal, if this is a new environment, I would consider reinstalling the whole thing to see if you can reproduce the problem. However, if the problem doesn't come back immediately, you'll always fear it might. Then again, maybe you just missed a step or a prereq or something that you may catch during reinstallation. I acknowledge that I'm violating the BAAG pledge, but I don't know that we can establish any test cases at this point to improve our chances of finding the right solution. Dan ----- Original Message ---- From: "" <> To: Sent: Thursday, January 17, 2008 5:53:37 AM Subject: Re: All RAC Nodes reboot without log-entry 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. @Dan 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. @Brian 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. @Andrew 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 - 13:45:09 CST

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