Mark Bole wrote:
> DA Morgan wrote:
>
>> mccmx_at_hotmail.com wrote:
>>
>>> So if I have 2 nodes in a RAC each with wildly different system times
>>> (i.e. hours difference), will RAC fall over in a big heap...??
>>
>>
>>
>> 'Will' is impossible to answer.
>>
>> Could? Yes.
>
>
> Some sparse information in Metalink, such as Note:212381.1 "RAC: Cluster
> Node evicted due to Change of System Time in version 9i". Seems the
> problem is more likely to happen if one server has its time set
> backwards (to an earlier time).
>
> This requirement (tight synchronization of system time for all servers
> in a RAC) does not appear anywhere that I could find in the RAC
> documentation (including, for example "OracleŽ Database Oracle
> Clusterware and Oracle Real Application Clusters Installation Guide
> 10g Release 2 (10.2) for Linux". I guess most of us don't notice it
> since the problem of server time synchronization was solved a long time
> ago.
>
> -Mark Bole
I know it is in internal Oracle docs. Can't say I looked any further.
What I can tell you is that Oracle's internal RAC experts always insist
on a time-server to standardize the cluster's nodes.
--
Daniel A. Morgan
http://www.psoug.org
damorgan_at_x.washington.edu
(replace x with u to respond)
Received on Sat Sep 17 2005 - 00:07:05 CDT
