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Backups


Backups

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Ramkumar.K
Ramkumar.K
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Hi..

While we are taking Full Backup on a DB, I hope the Log files also be got backed up. Then How it is possible to run a full back up and Transaction log backup simultaneously???

Will there any conflict come???

Can any one explain about it??

Ramkumar . K
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rene-500237
rene-500237
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Hi all,
as far as I can read the table log backup and DB backaup cannot be run at the same time. And if so I like to get my 2 points Wink
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steveb.
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check the link, according to the diagram they can.
There is no black dot this means that they can be run at the same time.
rene-500237
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normally I read the dots as 'is working OK' and not vice versa.w00t
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steveb.
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yeah, i had to read it a couple of times as well Smile
bitbucket-25253
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Dots or no dots from:
http://msdn2.microsoft.com/en-us/library/aa225964(SQL.80).aspx
The following text:

Note During a full database or differential backup, Microsoft® SQL Server™
backs up enough of the transaction log to produce a consistent database for when the database is restored.

Now I know the question is can a backup be started ... does not ask if it must be successful or even completed, but that is implied for why else would you do it.

So my question is: How does SQL backup a portion of the log file when the log file can not be backed up due to an open transaction.

Will somebody please explain.?

If everything seems to be going well, you have obviously overlooked something.

Ron

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Before posting a performance problem please read
Alan Vogan
Alan Vogan
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The real answer to this question? The user doesn't know anything about full back-ups or log back-ups. I've got 3000 other things on my plate. They'll be able to run that report in about 20 minutes... Wink
rlondon
rlondon
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The following link also shows that the two can be run concurrently
http://msdn2.microsoft.com/en-us/library/ms187900.aspx
Steve Jones
Steve Jones
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The database backup backs up all pages, then it scans the logs, grabbing pages needed to cover transactions that have taken place since the backup started. In this way it has a consistent backup while allowing users to still work on the database. The full backup does not change or alter the log, which is why you need log backups to clear the log. And this is why the log backup can be run at the same time.

Would you do this? I have seen scheduled conflict, though it's not likely you would purposely do this.

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Ramkumar.K
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hi..

I am trying to Back up a database in SQL Server 2005.

Back up Type : Full

Recovery Model : Simple

In the Backup taking wizard in sql server 2005, i chose options tab for applying various options available there like

> Verify backup when finished
> perform checksum when writing data.

There I need to select the option under the Transaction Log Area.
For truncating the log while taking DB Backup.

but the whole Transaction Log Area is disabled in that wizard...

How to make it enabled??? and when it ll be enabled???

How to take the backup with out transaction log details...???

Ramkumar . K
Senior Developer
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