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#1: How to recover deleted records?

Posted on 2008-04-24 10:06:28 by nano2k

Hello

I accidentaly ran a DELETE command against a table with a wrong WHERE
clause.
My database had no backup, but the recovery model was Full.
I am using SQL Server 2005.

Is there a way, or any utility software that could help me recover the
lost data?
The .ldf file is twice as big than the .mdf file, so I think that my
records are still there in the .ldf file.

Thanks.

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#2: Re: How to recover deleted records?

Posted on 2008-04-24 14:44:03 by helmut woess

Am Thu, 24 Apr 2008 01:06:28 -0700 (PDT) schrieb nano2k:

> Hello
>
> I accidentaly ran a DELETE command against a table with a wrong WHERE
> clause.
> My database had no backup, but the recovery model was Full.
> I am using SQL Server 2005.
>
> Is there a way, or any utility software that could help me recover the
> lost data?
> The .ldf file is twice as big than the .mdf file, so I think that my
> records are still there in the .ldf file.
>
> Thanks.

I don't know a way to read the log file. And the only tool i know which can
possibly help you is Apex SQL Log, but it has it's price:
http://apex-sql-log.apex-sql-llc.qarchive.org/

bye,
Helmut

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#3: Re: How to recover deleted records?

Posted on 2008-04-24 16:33:52 by Hugo Kornelis

On Thu, 24 Apr 2008 01:06:28 -0700 (PDT), nano2k wrote:

>Hello
>
>I accidentaly ran a DELETE command against a table with a wrong WHERE
>clause.
>My database had no backup, but the recovery model was Full.
>I am using SQL Server 2005.
>
>Is there a way, or any utility software that could help me recover the
>lost data?
>The .ldf file is twice as big than the .mdf file, so I think that my
>records are still there in the .ldf file.
>
>Thanks.

Hi Nano2k,

If you have ever made a full backup, then you can restore the lost data
by performing the following steps:

1. Make a tail-log backup;
2. Restore from the full backup;
3. Restore any regular log backups you made since the full backup (if
you never made any, skip this stip), with the NORECOVERY option;
4. Restore from the tail-log backup made previously with the STOPAT and
the RECOVERY options.

You can find more information about all these steps in Books Online.


If you really never made a backup, you'll either need some third-party
product (Helmut mentions Apex; I'll throw in Red Gate as an alternative;
there might be more options available), or a bunch of very good and fast
typists.


After mopping the floor (recovering the data), your first task will be
to fix the ceiling, i.e. to set up a regular backup schedule and to test
restoring in various disaster scenarios. Good luck!

--
Hugo Kornelis, SQL Server MVP
My SQL Server blog: http://sqlblog.com/blogs/hugo_kornelis

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