Posts by Brent Ozar

[Video] Office Hours: Off St. Thomas

Videos
2 Comments
I’m at sea again, this time cruising aboard the Disney Treasure off of St. Thomas. Let’s go through your top-voted questions from https://pollgab.com/room/brento. Office Hours: Database Q&A Off St. ThomasWatch this video on YouTube 00:00 Start 01:40 DbaMan: You have been reulctant to turn on ADR. It is required for optimized locing in SQL Server…
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There aren't supposed to be ties here

And Then There Was The Time RCSI Actually Made Query Results More Accurate.

Normally when I tell people about SQL Server’s optimistic concurrency isolation levels, Read Committed Snapshot Isolation (RCSI) and Snapshot Isolation (SI), I have to give them a little speech about how they need to test their queries because the results can change. Recently, though, I was working with a client who was getting the wrong query…
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If You Had to Go Back On-Prem… #tsql2sday

Cloud Computing
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For T-SQL Tuesday #199, Koen Verbeeck posed an excellent question: if your company moved up to the cloud, but after migrating, had to come back on-premises, what would be the big problems? I’ve had clients in this exact situation! Here are some of my favorite gotchas from those experiences. Buying hardware is really hard right…
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[Video] Office Hours: Ask Me Anything At Home

Videos
2 Comments
I’m back in the home office to take another round of the top-voted questions from https://pollgab.com/room/brento. Office Hours: Back in Vegas EditionWatch this video on YouTube Here’s what we covered: 00:00 Start 00:52 chris: After your time at SQLBits you’d posted about the number of SQL Server consultants who were very opposed to AI. What…
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SQL Server Spring Training - How to Tune Queries Fast

[Video] How to Tune Queries Fast

Videos
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In this live stream recording, I’ll show you how to use the latest features of sp_BlitzCache to rapidly improve performance on an existing server. I’ll show you how to find your server’s top bottleneck, find the queries causing that bottleneck, and then demonstrate how to get advice from AI on how to tune them in…
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SSMS Copilot is Messing With Your AI Prompts.

AI
11 Comments
You might notice that the advice you get from Copilot in SSMS isn’t very good, but it isn’t necessarily AI in general. Part of the problem is something specific about SSMS Copilot and the way it prompts LLMs, and I wish I could tell you exactly what it is, but I can’t because I don’t…
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How to Tune Indexes Fast

[Video] How to Tune Indexes Fast

Videos
6 Comments
In this 76-minute session, I’ll show you how to use the latest features of sp_BlitzIndex to rapidly improve performance on an existing database. I’ll show you how to figure out quickly if you’ve got too many indexes or not enough, and then demonstrate how to get advice from AI on how to consolidate them in…
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Office Hours on the Hammock

[Video] Office Hours in Port

Videos
2 Comments
Our cruise ship pulled into port in Victoria, Canada, so before we head out to the Butchart Gardens, let’s go through your top-voted questions from https://pollgab.com/room/brento. Office Hours: In Port in Victoria, CanadaWatch this video on YouTube Here’s what we covered: 00:00 Start 02:17 Janis: Hey Brent, Deleted million of rows from Azure SQL clustered…
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