PRVF-5408 : NTP Time Server is common only to the following node

Hi all,
i found the following errors in $GRID_HOME/log/`hostname`/alert`hostname`.log :
2011-12-21 01:24:26.854
[client(18213)]CRS-10051:CVU found following errors with Clusterware setup : PRVF-5408 : NTP Time Server "193.204.114.233" is common only to the following nodes "e1dbp01na"
PRVF-5408 : NTP Time Server "193.204.114.232" is common only to the following nodes "e1dbp01nb"
2011-12-27 13:25:49.410
[client(20522)]CRS-10051:CVU found following errors with Clusterware setup : PRVF-5408 : NTP Time Server "193.204.114.233" is common only to the following nodes "e1dbp01na"
2011-12-29 01:26:10.541
[client(18799)]CRS-10051:CVU found following errors with Clusterware setup : PRVF-5408 : NTP Time Server "193.204.114.232" is common only to the following nodes "e1dbp01na"
The weird thing is that ntp configuration is symmetrical between both nodes and the ntp server "193.204.114.232" does not appear in /etc/ntp.conf
Why ntpd should use a server which is not listed in /etc/ntpd.conf ?
thanks,
Andrea

Yes, that IP is a valid hostname: 193.204.114.232 is ntp1.inrim.it, the "official" italian ntp server.
193.204.114.232 and ntp1.inrim.it do not appear in /etc/hosts, /etc/resolve.conf Ntp configuration is :
[oracle@e1dbp01na ~]$ cat /etc/sysconfig/ntpd
# Drop root to id 'ntp:ntp' by default.
OPTIONS="-x -u ntp:ntp -p /var/run/ntpd.pid"
# Set to 'yes' to sync hw clock after successful ntpdate
SYNC_HWCLOCK=no
# Additional options for ntpdate
NTPDATE_OPTIONS=""
[oracle@e1dbp01na ~]$ grep ^server /etc/ntp.conf
server 127.127.1.0
server 172.18.1.7
server 172.18.1.70
and cluvfy comp clocjsync shows:
NTP common Time Server Check started...
NTP Time Server "193.204.114.232" is common to all nodes on which the NTP daemon is running
NTP Time Server ".INIT." is common to all nodes on which the NTP daemon is running
NTP Time Server ".LOCL." is common to all nodes on which the NTP daemon is running
Check of common NTP Time Server passed
...

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NTP time server failed

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In oracle 11.2.0.1.0,
$ cluvfy comp clocksync
Verifying Clock Synchronization across the cluster nodes
Checking if Clusterware is installed on all nodes...
Check of Clusterware install passed
Checking if CTSS Resource is running on all nodes...
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If i manually check the time,its synchronized.
Also the result was successful here. But why it shows PRVF errors.
Could you suggest.
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Abdur Raoof

PRVF-05410: Check of common NTP Time Server failed
Cause: The NTP query command showed there is no common time server among all of the nodes in the cluster.
Action: At least one common NTP Time Server is required for a successful Clock Synchronization check. Reconfigure all of the nodes in the cluster to synchronize with at least one common NTP Time Server. If you plan to use CTSS for time synchronization then NTP configuration should be uninstalled on all nodes of the cluster. Refer to "Preparing Your Cluster" of "Oracle Database 2 Day+ Real Application Clusters Guide".
http://download.oracle.com/docs/cd/E14072_01/server.112/e10880/prvfmsg.htm
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Http server cannot start after running the following JSP

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I have 9iAS 1.0.2.2 and it has been working fine.
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