On Tue, 7 Aug 2001, sfitzgerald_at_centurytel.net wrote:
> You are not quite correct. While the tablespace is in hot
> backup mode, the change number of the blocks are frozen.
> Changes are still applied to the blocks and redo is still
> generated (Oracle does not "save up" all the changes during the
> backup and then replay them at the end -- otherwise your
> database query results would be quite stale). At the end of
> the backup, the change numbers are updated, but the actual row
> changes have already taken place as they would any other time.
> The reason the hot backup works is because if you restored the
> files backed up during the hot backup, the change number would
> be at the point of the beginning of the backup and then normal
> recovery with redo logs can take place.
--
Galen Boyer
It seems to me, I remember every single thing I know.
Received on Wed Aug 29 2001 - 21:29:19 CDT
