Oracle Database Appliance unscheduled reboot

Our Oracle database appliance (Oracle linux server 5.9) did an unscheduled reboot last night. I've
checked the various logs in the /var/log folder but cannot determine the cause of the reboot.
I'd appreciate any guidance that someone can offer in determining the cause for this reboot.
Thanks,
steve

A system restart can happen because:
a) root or sudo user initiated a system restart.
b) there was a kernel panic and the system clock stopped responding (BIOS configuration)
c) there was a power outage or problem (BIOS configuration)
d) the system overheated or there was a hardware issue
/var/log/messages should indicate the time between the shutdown and when the restart happened. Sometimes this can give you some clues. Otherwise you may want to check the following:
http://www.oracle.com/technetwork/articles/servers-storage-admin/fault-management-linux-2005816.html
If a system resets due to external cause or root, it is usually not logged. Is the system connected to UPS power? Since you did not specify your hardware, no information can be given about other possible tools. Depending on your server you may check the iLO or iLOM event log.

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    inet 10.20.1.77 netmask ffff0000 broadcast 10.20.255.255
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    e1000g0: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
    inet 10.20.1.75 netmask ffff0000 broadcast 10.20.255.255
    ether 0:c:29:2b:db:90
    e1000g0:1: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
    inet 10.20.1.78 netmask ffff0000 broadcast 10.20.255.255
    - My private network configuration is:
    node 1:
    e1000g1: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 3
    inet 192.168.0.1 netmask ffffff00 broadcast 192.168.0.255
    ether 0:c:29:3a:45:b3
    node 2:
    e1000g1: flags=1000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 3
    inet 192.168.0.2 netmask ffffff00 broadcast 192.168.0.255
    ether 0:c:29:2b:db:9a
    - My storage solution is:
    - 3 virtual shared SCSI hard disks ( each 500 MB in size )
    - My log files are:
    - /var/adm/messages
    - doesn't report much only the following:
    Nov 12 10:57:05 saucer nfs4cbd[328]: [ID 867284 daemon.notice] nfsv4 cannot determine local hostname binding for transport
    tcp6 - delegations will not be available on this transport
    Nov 12 10:57:21 saucer savecore: [ID 570001 auth.error] reboot after panic: forced crash dump initiated at user requestNov 12 10:57:21 saucer savecore: [ID 748169 auth.error] saving system crash dump in /var/crash/saucer/*.2Nov 12 10:57:41 saucer root: [ID 702911 user.error] Oracle Cluster Ready Services disabled by administrator.Nov 12 10:57:54 saucer rootnex: [ID 349649 kern.info] xsvc0 at rootNov 12 10:57:54 saucer genunix: [ID 936769 kern.info] xsvc0 is /xsvc
    - ocssd.log file for node1 indicates that node2 was evicted for impeding a reconfig. Details are:
    [    CSSD]2008-11-12 10:55:43.700 [15] >TRACE: clssnmPollingThread: node saucer (2) is impending reconfig
    [    CSSD]2008-11-12 10:55:43.700 [15] >WARNING: clssnmPollingThread: node saucer (2) at 90% heartbeat fatal, eviction in 0
    .973 seconds
    [    CSSD]2008-11-12 10:55:44.679 [15] >TRACE: clssnmPollingThread: node saucer (2) is impending reconfig
    [    CSSD]2008-11-12 10:55:44.679 [15] >TRACE: clssnmPollingThread: Eviction started for node saucer (2), flags 0x000d, s
    tate 3, wt4c 0
    [    CSSD]2008-11-12 10:55:44.690 [17] >TRACE: clssnmDoSyncUpdate: Initiating sync 3
    [    CSSD]2008-11-12 10:55:44.690 [17] >TRACE: clssnmDoSyncUpdate: diskTimeout set to (27000)ms
    [    CSSD]2008-11-12 10:55:44.691 [17] >TRACE: clssnmSetupAckWait: Ack message type (11)
    [    CSSD]2008-11-12 10:55:44.691 [17] >TRACE: clssnmSetupAckWait: node(1) is ALIVE
    [    CSSD]2008-11-12 10:55:44.691 [17] >TRACE: clssnmSetupAckWait: node(2) is ALIVE
    [    CSSD]2008-11-12 10:55:44.691 [17] >TRACE: clssnmSendSync: syncSeqNo(3)
    - node2 ocssd.log does not indicate the problem. See below for details:
    [    CSSD]2008-11-12 10:52:34.731 [11] >TRACE: clssgmClientConnectMsg: Connect from con(da8410) proc(dab900) pid() proto(
    10:2:1:1)
    [    CSSD]2008-11-12 10:53:37.305 [11] >TRACE: clssgmClientConnectMsg: Connect from con(da8410) proc(dab900) pid() proto(
    10:2:1:1)
    [    CSSD]2008-11-12 10:54:40.515 [11] >TRACE: clssgmClientConnectMsg: Connect from con(da8410) proc(dab900) pid() proto(
    10:2:1:1)
    [    CSSD]2008-11-12 11:18:09.997 >USER: Oracle Database 10g CSS Release 10.2.0.3.0 Production Copyright 1996, 2004 Orac
    le. All rights reserved.
    [    CSSD]2008-11-12 11:18:09.997 >USER: CSS daemon log for node saucer, number 2, in cluster crs
    [  clsdmt]Listening to (ADDRESS=(PROTOCOL=ipc)(KEY=saucerDBG_CSSD))
    [    CSSD]2008-11-12 11:18:10.016 [1] >TRACE: clssscmain: local-only set to false
    [    CSSD]2008-11-12 11:18:10.031 [1] >TRACE: clssnmReadNodeInfo: added node 1 (flying) to cluster
    [    CSSD]2008-11-12 11:18:10.042 [1] >TRACE: clssnmReadNodeInfo: added node 2 (saucer) to cluster
    [    CSSD]2008-11-12 11:18:10.057 [5] >TRACE: clssnm_skgxnmon: skgxn init failed
    [    CSSD]2008-11-12 11:18:10.057 [1] >TRACE: clssnm_skgxnonline: Using vacuous skgxn monitor
    - ORACLE VERIFY: cluvfy was run on node2 resulting with the following:
    bash-3.00$ ./cluvfy comp ocr -n all -verbose
    Verifying OCR integrity
    Checking OCR integrity...
    Checking the absence of a non-clustered configuration...
    All nodes free of non-clustered, local-only configurations.
    Uniqueness check for OCR device passed.
    Checking the version of OCR...
    OCR of correct Version "2" exists.
    Checking data integrity of OCR...
    Data integrity check for OCR passed.
    OCR integrity check passed.
    Verification of OCR integrity was successful.
    bash-3.00$
    Thanks
    jlem

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