Friday, March 30, 2012

Recovery of dropped data that was never back up

Hi

I am trying to recover a set of tables with data that was dropped. This data was not backed up. Please advice, is there any way this data can be recovered.

With SQL, the way to go back in time is to restore backups. You really can't recover dropped tables without any backups.

Depending on how valuable and critical the information is (which begs the obvious question of why it wasn't backed up if it was valuable), you may be able to do some forensic data mining on the files themselves. The data is not actually overwritten, just marked as free mujch as the filesystem does. So as long as the space has not been reused, there may still be information out there. SQL has no utilities for this, however.

You can either examine the raw files with a hex editor, or someone may know of a 3rd-party utility to make it slightly easier. None of this is of course supported.

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