How to undo a delete operation in SQL Server 2005?
Asked By: Daren Thomas
Originally Asked On: 2008-10-14 15:00:32
Asked Via: stackoverflow
Our Test DB is suddenly missing rows. We want them back.
Is there a way to sift through everything that has happened to the database today? Each SQL statement? I presume this kind of stuff is in the transaction log, but am not sure how to view it.
Is there a way to undo delete operations?
BTW: Yes, we do have a backup, but would prefer to find the cause of the deletion as well…
He received 5 answers
eventually accepting:
Galwegian’s answer to
How to undo a delete operation in SQL Server 2005?
You can do this with some of Red Gate‘s tools, but it costs. Take a look at SQL Log Rescue.
Otherwise, I’d be tempted to do a restore.
The answer with the highest score with 2 points was:
JdMR’s answer to
How to undo a delete operation in SQL Server 2005?
[late answer but hopefully useful]
There is a way to recover deleted rows using transaction log but only if you use 3rd party tools and only of your database is in full recovery mode.
Dell (formerly Quest) has Toad for SQL Server and ApexSQL has ApexSQL Log and ApexSQL Recover that can also read t-log and recover data. Unfortunately Log Rescue from Red Gate can only read logs on SQL Server 2000.
There is also a way to read t-log using undocumented dbcc log command. See more details here.
Considering you already have database backups you can restore these in separate database and then use one of many data comparison tools that exist on the market to insert missing data into production database. Of course this can only recover data delete prior to creating a backup.
If the selected answer did not help you out, the other answers might!
All Answers For: How to undo a delete operation in SQL Server 2005?
Galwegian’s answer to
How to undo a delete operation in SQL Server 2005?
You can do this with some of Red Gate‘s tools, but it costs. Take a look at SQL Log Rescue.
Otherwise, I’d be tempted to do a restore.
Dave Markle’s answer to
How to undo a delete operation in SQL Server 2005?
You need a third-party tool to do this. The tool has to be able to go into the transaction logs and view the log entries so you can see what happened. I haven’t used any of these tools, but I’d try Red Gate’s SQL Log Rescue for starters. Give it a try:
Gary’s answer to
How to undo a delete operation in SQL Server 2005?
I’d give ChronicDB a try which has a free version rather than pay for Red Gate
JdMR’s answer to
How to undo a delete operation in SQL Server 2005?
[late answer but hopefully useful]
There is a way to recover deleted rows using transaction log but only if you use 3rd party tools and only of your database is in full recovery mode.
Dell (formerly Quest) has Toad for SQL Server and ApexSQL has ApexSQL Log and ApexSQL Recover that can also read t-log and recover data. Unfortunately Log Rescue from Red Gate can only read logs on SQL Server 2000.
There is also a way to read t-log using undocumented dbcc log command. See more details here.
Considering you already have database backups you can restore these in separate database and then use one of many data comparison tools that exist on the market to insert missing data into production database. Of course this can only recover data delete prior to creating a backup.
Jason Clark’s answer to
How to undo a delete operation in SQL Server 2005?
You can undo a transaction by using
Rollbackcommand in SQL Server. But, you need to know the transaction can be rolledback if the transaction were performed withinBegintransaction.
Of course, you should really check out the original question.
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