configuration ntp on all servers

[Yong Huang]

> My question is what happens to a server that is actually at 
> 15:00 and is 14:00.
>
> For example, the case with oracle when I say that has to go 
> to the past?
>
> What happens to the logs if they suddenly tell you that you 
> have to go to the past?

Oracle won't have a problem in terms of redo log generation, 
or recoverability, because it uses an internal number (SCN) as 
its "time". SCN always goes up.

It will have a problem with jobs you set up. For instance, it 
may run twice simply because some time after it ran at 14:00, 
the time becomes 14:00 again. So the jobs must be checked one 
by one.

Yong Huang