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| subject: | Re: Wot`s the passmark? - Transaction Log Backups.doc (0/1) |
From: "Geo."
"Mike Nice" wrote in message
news:ng331v881rsan1f4r27l61pkrhbitfpto8{at}4ax.com...
> I'm not an expert, but you're referring to journaling which when
replayed against a restore of
> the original database can recreate the DB up to the point of the last log
backup.
>
> The transaction log serves another function: if in the entire
transaction cannot be completed,
> it can be rolled back as if it never existed. An UPDATE X SET Y=Y+1
creates a huge entry in the
> transaction log.
I understand the log can be used to roll forward or backwards. My
contention is that once you do a database shrink you can no longer roll
back record deletions.
Geo.
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