Full Recovery Model

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Full Recovery Model

zymos

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March 6, 2012 at 9:52 pm

#265550

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baabhu SSCertifiable Points: 6205 More actions · Answer 1

baabhu

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March 6, 2012 at 9:54 pm

#1455726

Thank you for the simple question. + 1 added.

SQLRNNR SSC Guru Points: 281334 More actions · Answer 2

EZ PZ

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M&M SSC-Insane Points: 21700 More actions · Answer 3

M&M

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March 6, 2012 at 10:48 pm

#1455737

Good one.

M&M

tommyh SSCertifiable Points: 6302 More actions · Answer 4

tommyh

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March 6, 2012 at 11:15 pm

#1455741

<cough>referense</cough>

/T

Koen Verbeeck SSC Guru Points: 259085 More actions · Answer 5

Nice back to basics question. Very thorough reference though, took me hours to wield through 😀

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yannick.dinger SSC Enthusiast Points: 196 More actions · Answer 6

yannick.dinger

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March 7, 2012 at 1:03 am

#1455777

easy and basic but i love it !!!!!!!!! :hehe:

paul.knibbs SSCoach Points: 15320 More actions · Answer 7

Wasn't the "explanation" more or less a repeat of the question? It really felt like "Is X true? Yes it is, because X is true!". Needed a reference at the very least.

Carlo Romagnano SSC-Insane Points: 22603 More actions · Answer 8

Carlo Romagnano

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March 7, 2012 at 1:48 am

#1455795

What do you mean for "created and loaded database"?

rfr.ferrari SSCertifiable Points: 6879 More actions · Answer 9

Stewart "Arturius" Campbell (3/7/2012)
Nice, simple back-to-basics question, thanks, Peter
For the explanation, refer to Working with Transaction Log Backups, specifically the third paragraph

+1

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Hugo Kornelis SSC Guru Points: 64780 More actions · Answer 10

Stewart "Arturius" Campbell (3/7/2012)
Nice, simple back-to-basics question, thanks, Peter
For the explanation, refer to Working with Transaction Log Backups, specifically the third paragraph

And to add to that reference, the reason for this is that a restore always has to start with the restore of a full backup. A full backup contains the information in the database at a given point; a log backup contains a list of changes. When you need to restore to a point in time, you HAVE to restore to the complete content of a previous point in time first, then reapply the changes by following the chain of log backups.

Without a starting point to base the changes on, a set of changes is useless. That's why SQL Server refuses to let you save such a set of changes. (In fact, when setting a database to FULL or BULK_LOGGED recovery, the actual running mode always remains SIMPLE until you take a full backup. And the same is true for newly created databases.)

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SqlMel SSCrazy Points: 2901 More actions · Answer 11

Good question. Got me thinking a little since I never tried this before.

@hugo: Thanks for the explanation. That rationalization of the restore process is what led me to the right answer.

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Mel. 😎

jeff.mason SSCrazy Eights Points: 9585 More actions · Answer 12

Hugo Kornelis (3/7/2012)
(In fact, when setting a database to FULL or BULK_LOGGED recovery, the actual running mode always remains SIMPLE until you take a full backup. And the same is true for newly created databases.)

Ooohh... did not know that, never thought about it since I start backups immediately, but that is good to know. This implies that therefore should a backup be forgotten, the changes are immediately lost even to a log reader should a transaction log backup be taken later on after the full backup. Good to know indeed.

EL Jerry SSCertifiable Points: 7061 More actions · Answer 13

Nice and easy, but still got me thinking a little bit 🙂

@hugo, thank you for the explanation, clear and concise.

"El" Jerry.

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