August 2012
Intermediate to advanced
1416 pages
33h 39m
English
book
Microsoft SQL Server 2012 Bible
by Adam Jorgensen, Jorge Segarra, Patrick LeBlanc, Jose Chinchilla, Aaron Nelson
Content preview from Microsoft SQL Server 2012 Bible
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Chapter 24
Database Snapshots
In This Chapter
Understanding How Database Snapshots Work
Creating, Querying, and Dropping a Database Snapshot
Rolling Back a Database Snapshot
The Database Snapshot feature, originally introduced in SQL Server 2005, enables a point-in-time, read-only, consistent view of your user databases to use for reporting, auditing, or recovering purposes. Before database snapshots, this functionality was achieved by running a backup and restoring it to another database. The big advantages provided by database snapshots are the speed at which you create them and the capability to create multiple database snapshots of the same source database, providing you with snapshots of the database at different points in times.
Note
The Database Snapshot feature is an Enterprise Edition feature supported by all database recovery models.
The Database Snapshot feature was primarily designed to:
- Generate reports without blocking the production/source database.
- Perform reporting on a database mirror.
- Recover from user or administrator errors.
- Revert the source database to an earlier point in time.
- Report on historical and point-in-time data.
- Manage a test database.
Database snapshots are similar to databases in many ways but they do have some limitations of which you should be aware:
- Database snapshots are read-only static copies of the source database.
- You cannot create database snapshots for system databases (master, model, and tempdb).
- You can create database ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.