Friday, November 03, 2006

When Snapshot Isolation Helps and When It Hurts

My next article on

You know SQL Server 2005's new snapshot isolation feature can help you reduce lock contention and deadlocks, but did you know that it also can help you fix intermittent errors in reports and detect lost updates? You know that snapshot isolation requires some effort from your DBA, but did you know it may introduce some breaking changes into applications? Its benefits are well known, but SQL Server developers need to understand the downstream ramifications of snapshot isolation. This article discusses a couple of common real-world scenarios that illustrate the often-unanticipated consequences of using this feature.


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