Re: Checkpoint ...

> > Whenever checkpoint happens datafile header scn and controlfile scn
> > will be in sink. Is my assumption is right? Is there any other scenarios
> > where checkpoint only update controlfile and doesn't update datafile
> > header? Agreed, during "begin backup" mode datafile header will be
> > frozen.. Other than that any scenarios?
>
> Note that not the *whole* header of a datafile is *not* frozen during
backup
> mode, only the checkpoint_scn and checkpoint_time structure in it are (+
> possibly few others), but for example checkpoint_count for this datafile
> still keeps incrementing due checkpoints.

I got too carried away with "not"-s here... Anyway, the idea is that only few structures in datafile header are frozen during backup mode, but some may change as usual.

Tanel.

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Author: Tanel Poder
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