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Transaction Rollbacks with Identity Values

Have you ever noticed unexpected gaps in sequences in IDENTITY columns? Even though you’ve got transactions set up for your inserts and a no-deletion policy, you find that there are missing values in what should be an unbroken sequence of numbers. The problem could be partially related to transaction rollbacks.

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2009-07-09

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Detecting Deadlocks

By default, how often is the SQL Server Database Engine checking for deadlocks?

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