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difference in time between app servers and db nodes

iinfiOct 21 2010 — edited Oct 21 2010

hi all

I m facing an issue in my SUSE linux 10 servers. we have two App servers running in a load balanced env, server-oas1 and server-oas2
We have two db servers in a RAC servicing requests from the app servers server-odbs1 and server-odbs2.
server-obi and server-test are Oracle BI and test servers respectively.

date command run on all servers with seconds of each other show the following
>
Correct time as per my timezone: 13.39 Hrs

user1@server-oas1:~> date
Thu Oct 21 13:24:59 GST 2010

user1@server-oas2:~> date
Thu Oct 21 13:24:56 GST 2010

user1@server-obi:~> date
Thu Oct 21 13:26:02 GST 2010

user1@server-otest:~> date
Thu Oct 21 13:26:04 GST 2010

user1@server-odbs1:~> date
Thu Oct 21 13:43:08 GST 2010

user1@server-odbs2:~> date
Thu Oct 21 13:45:43 GST 2010

how critical is it to have a time sync between all these servers and if i do need to change the time should i sync it with an NTP. What should be the precautions i should take?

Thanks

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Locked on Nov 18 2010

Added on Oct 21 2010

#performance-availability, #real-application-clusters

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