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Unavailable values

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harryb



Joined: 10 Nov 2006
Posts: 4
PostPosted: Fri Nov 10, 2006 9:38 am    Post subject: Unavailable values Reply with quote
You say "The data from the log could be unavailable because the data has been overwritten in the log. This could happen on databases that use the Full recovery model when a full backup is done. It could also be that the database is using the simple recovery model. In the latter case, there is no guarantee that the data will be available."

Surely, having Full Recovery is a normal case and taking Full backups is a normal case.

We take backups once a day and backup the logs every two hours, why would data be unavailable for many logs in the day?
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Brian Donahue



Joined: 23 Aug 2004
Posts: 6344
Location: Red Gate Software
PostPosted: Sat Nov 11, 2006 4:41 pm    Post subject: Reply with quote
Hi Harry,

I think the idea of the original information is about the whole transaction not appearing in the Log Rescue screen rather than a transaction that has been identified, but the data is unavailable.

I'm not totally sure about all of the reasons why the data would be unavailable. I'd have to get back to you about that.
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harryb



Joined: 10 Nov 2006
Posts: 4
PostPosted: Mon Nov 13, 2006 2:11 am    Post subject: Re: Reply with quote
If you need any examples / screen shots / logs, let me know.

Cheers

Harry



Brian Donahue wrote:
Hi Harry,

I think the idea of the original information is about the whole transaction not appearing in the Log Rescue screen rather than a transaction that has been identified, but the data is unavailable.

I'm not totally sure about all of the reasons why the data would be unavailable. I'd have to get back to you about that.
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