Re: Question on 11gR2 RAC Cluster Time Synchronization Service (CTSS)

We have been using ntpdate for time sync in a cron job in our 10gR2 RAC, guess we'll still need to use it in 11gR2 RAC. I wonder why Oracle provides CTSS since we still need to sync time with a time server?

On Wed, Jun 22, 2011 at 11:30 AM, Martin Klier <usn_at_usn-it.de> wrote:
> Hi together,
>
> I have the same problem, and I solved it with a carefully adjusted drift
> file (using ntpdate from time to time)
>
> Regards
> Martin
>
> D'Hooge Freek schrieb:
>> Li,
>>
>> CTTS will indeed only keep the time of the cluster nodes synchronised between the nodes themselves and not with an external source.
>> If you want this, then you need to configure the network time protocol (NTP) daemon.
>> When the NTPD is running, the CTTS process will automatically run in "observer" mode.
>>
>>
>> Regards,
>>
>> Freek D'Hooge
>> Uptime
>> Oracle Database Administrator
>> email: freek.dhooge_at_uptime.be
>> tel +32(0)3 451 23 82
>> http://www.uptime.be
>> disclaimer: www.uptime.be/disclaimer
>>
>> -----Original Message-----
>> From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Li Li
>> Sent: woensdag 22 juni 2011 17:17
>> To: oracle-l
>> Subject: Question on 11gR2 RAC Cluster Time Synchronization Service (CTSS)
>>
>> Hi, List,
>>
>> In a 11.2.0.2 RAC, with 11gR2 RAC Cluster Time Synchronization Service
>> (CTSS) running in active mode, CTSS does its work to sync time among
>> all nodes in the cluster. However, the time on all nodes gets behind
>> after a while (say 5 minutes behind after 8 months) . How would you
>> guys handle this situation? and how would you prevent this from
>> happening again? I've googled and searched on oracle documentation and
>> couldn't find anything about it.
>>
>> Thanks in advance!
>> -Li
>> --
>> http://www.freelists.org/webpage/oracle-l
>>
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>>
>
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