Archives for March 2015

ICYMI: Troubleshooting Availability Groups and the Schema Switcharoo – SQL Server Performance

Aaron Bertrand (b | t) is on a roll this month's SQL Server performance highlights with more great articles from SQLPerformance.com.   Troubleshooting AlwaysOn – Sometimes it takes many sets of eyes Aaron Bertrand (b | t) hit some obstacles recently when configuring an Availability Groups lab environment. This post shows how some assistance from the community helped him isolate and solve the issues. Another argument for stored procedures Learn the subtle ways that ad hoc queries can interfere with SQL Server performance by taking up more space in the plan cache than … [Read more...]

ICYMI: the Halloween Problem and DBCC CheckConstraints – SQL Server Performance

Don't miss these great articles on SQLPerformance.com from the industry’s top experts: A Look At DBCC CHECKCONSTRAINTS and I/O Erin Stellato (b | t) of SQLskills takes a deep look into the I/O impact of running DBCC CHECKCONSTRAINTS, including explaining why some check methods may consume a lot more I/O than others. The Halloween Problem, Part 1 of a 4-Part Series Paul White (b| t) provides unique insight into a long-standing data modification issue, the infamous Halloween Problem.  Much has been written over the years about understanding and optimizing SELECT queries, but … [Read more...]

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ICYMI: the Halloween Problem and DBCC CheckConstraints – SQL Server Performance

Don't miss these great articles on SQLPerformance.com from the industry’s top experts: A Look At DBCC CHECKCONSTRAINTS and I/O Erin Stellato (b | t) of SQLskills takes a deep look into the SQL Server performance impact, especially I/O, of running DBCC CHECKCONSTRAINTS, including explaining why some check methods may consume a lot more I/O than others. The Halloween Problem, Part 1 of a 4-Part Series Paul White (b| t) provides unique insight into a long-standing data modification issue, the infamous Halloween Problem.  Much has been written over the years about understanding and … [Read more...]