Which Processes are waiting on a Spinlock?

Spinlock contention is always a real headache to deal with. I recently saw an issue when spinlock contention on SOS_CACHESTORE was making the server virtually unresponsive. The issue was very intermittent with no obvious pattern but the assumption is that it was caused by a particular process in the application. Finding what that process was... Continue Reading →

sp_RestoreScript 1.9 – a dirty little bug squished!

It look like we had a little bug in sp_RestoreScript that was putting a rogue 0 after the backup file name. That's now been fixed in 1.9. For information and documentation please visit https://sqlundercover.com/2017/06/29/undercover-toolbox-sp_restorescript-a-painless-way-to-generate-sql-server-database-restore-scripts/ Keep an eye out for sp_RestoreScript 2.0 which is currently in development and will bring a while load of new features... Continue Reading →

Generate a Random Number for Each Row in a Query {a better way}

A couple of years ago I wrote a post on how to generate a random number in SQL Server. https://sqlundercover.com/2017/06/22/generating-random-numbers-for-each-row-over-a-specified-range-and-other-funky-stuff-you-can-do-with-them/ It's ok and it works, it's also a method that I used for quite a while. Why not use RAND() I've heard people say, well the issue with RAND() is that it will generate the... Continue Reading →

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