ALTER DATABASE

Dave Mason notes that ALTER DATABASE needs to be in an autocommitted transaction and will not roll back:

If you create that trigger and subsequently change the recovery model, you’ll get an error. But the recovery model doesn’t get changed back to its original setting. As the TSql comment notes, ROLLBACK doesn’t work in this context. And that’s a shame too. Sometimes the recovery model gets changed on accident, by a third-party vendor’s software installation, or by someone that isn’t familiar with the ramifications. I was trying to prevent that. <Grumble> At least I knew it wasn’t allowed. I just didn’t know why. After seeing this Connect item, “why” didn’t matter.

Dave goes on to point out that under certain circumstances, ALTER DATABASE will simply fail, so there are preventative checks; we just can’t build our own.

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