People have strong feelings about SQL Server Management Studio: they love it AND they hate it. In this week's episode, I talk about why people have such conflicting feelings about SSMS, and how to work it all out.
A query is slow, and you figure out how to collect the query execution plan. Now what? In this episode I talk "big picture" about what execution plans are, what "cost" is, why to collect "compiled for" values, and the steps I take to analyze execution plans while performance tuning queries.
As a SQL Server DBA, do you need to be a killer with scripts? In this episode I talk about how much you need to know about PowerShell, and examples of ways I personally use (and struggle with) PowerShell.
I'll be attending and presenting at the SQL PASS Summit in Seattle Washington this year from Oct 31-Nov 3. In this week's episode, I share why I'm excited about going, and why I've purchased a seat for a pre-conference session. (Spoiler: pre-cons are awesome!) I also give my tips on how to get the MOST value out of a big conference like the PASS Summit.
Over the years, readers have asked me: "How do you stay motivated?" Sticking with a learning plan, blogging, or becoming a public speaker isn't easy. In this episode I share how I think about motivation and what keeps me going.
This week's question from a reader: how do I deal with interview questions asking about real-world scenarios when I've faked three years of experience on my resume?
In this episode, I talk about three articles written by members of the SQL Server community on interviewing that I can't stop thinking about: "Playing the Third Party Recruiter Game", by Adam Machanic - http://sqlblog.com/blogs/adam_machanic/archive/2017/08/08/playing-the-third-party-recruiter-game-t-sql-tuesday-093.aspx "I Hate Interviews", by Rob Sewell - https://sqldbawithabeard.com/2017/08/08/i-hate-interviews-tsql2sday/ "Learning to say 'No'" by Mark Broadbent - https://tenbulls.co.uk/2017/...
Hear the story of an interview where my dreams were crushed - and what I learned about interviewing from the experience.
You've got some troubling wait stats in SQL Server. How can you tell which queries are causing those waits? Kendra discusses the pros and cons of different techniques to track down the cause of both common and tricky waits in SQL Server, including CXPACKET, PAGEIOLATCH, LCK, RESOURCE_SEMAPHORE, and THREADPOOL waits.
If you need to add, remove, or replace hints from ad-hoc queries and you can't change the code, plan guides can help. See a demo of removing hints from parameterized TSQL run from an application, and get tips on how to make your plan guides work in SQL Server. Get code samples from this episode here: https://sqlworkbooks.com/2017/05/removing-query-hints-with-plan-guides-dear-sql-dba-episode-43/
Learn what batch mode is in SQL Server, and how you can trick SQL Server into using it (even without a "real" columnstore index). For clickable links and demo code, head to https://sqlworkbooks.com/2017/05/batch-mode-hacks-for-rowstore-queries-in-sql-server/
Find out if getting certified will help you land an entry level DBA job, and if you do want to get certified, get Kendra's tips on preparing for the exam.
Ever had a database change go horribly wrong? It can feel awful in the moment, then eat away at your confidence for days afterward. In this 20 minute episode Kendra gives you practical steps that help you cope with change over the course of your DBA career.
An important query is suddenly slow. Is it because statistics are out of date? This is tricky to figure out, and updating statistics right away can make troubleshooting even harder. Learn how to use query execution plans to get to the heart of the question and find out if stats are really your problem, or if it's something else. In this 35 minute episode: 00:39 SQL Server 2017 Announced 01:10 New video from Microsoft's Joe Sack demonstrating Adaptive Query Processing 03:05 This week's question: ...
They made their index maintenance job smarter, and their queries got slower in production afterward. Could the index maintenance have harmed performance? In this episode... 00:50 Thinking about plan freezing in Query Store and multi-team process 03:15 This week's question about index maintenance and query performance
The dev server got bogged down during a deployment and lock timeouts were everywhere. Was the perfmon counter way off about how much memory was being used just for locks? In this episode... 00:33 What's new @ SQL Workbooks: Down the Rabbit Hole 03:00 This week's question about lock timeouts & memory in SQL Server
A database transaction log is expanding, even though the DBA is running log backups and doesn't see an open transaction? What's going on with this Availability Group? Timestamps in this episode if you want to skip ahead: 00:49 What's new @ SQL Workbooks 03:22 Info on SQLPASS Summit Content Survey & a heads-up for aspiring precon speakers 05:35 This week's question about t-log growth
A few episodes ago, I talked about how learning about Write Ahead Logging was a light bulb moment for me, and helped me learn tons of concepts about backups and recovery. This week, we talk about when SQL Server turns things upside down and doesn't use write ahead logging: and what it has to do for recovery in these special cases.
When you migrate a database, it can be useful to prove that you moved all the data and didn't miss any transactions. Learn how to use a tail log backup in a migration scenario.
Learn what a Stack Dump is in SQL Server. Hear what happens when Kendra causes a stack dump against a test SQL Server instance under load. Learn how to find information about stack dumps on your SQL Server, and how to escalate them when required.
When you're a Junior DBA, it's really hard to take in all the information out there. Learn about write ahead logging: the concept that can help you make sense of recovery models and backup strategies in SQL Server. Kendra tells the story of the "Wow!" moment when she learned about write ahead logging from Kimberly Tripp of SQLSkills.com, and explains how this all works in SQL Server.
Will cloud services render DBAs obsolete? Does the cloud mean that developers will use less of SQL Server? Kendra talks about the future of database administration and gives tips on strategizing your career.
Learn why the output from the built-in procedure sp_who2 can be so confusing, how to get more information, and free tools that can make it easier to figure out what you need to pay attention to in SQL Server.
Learn where full-text search shines, a common problem which full-text search does NOT solve, where full-text can run into performance problems.
Learn the difference between heaps, clustered and nonclustered indexes, primary keys, and columnstore indexes in SQL Server.
Learn how to approach the unexpected in a mysterious execution plan that contains way more operators than expected for a very simple SQL Server query.
Performing a switcharoo between new and old tables can cause blocking nightmares. Partition switching may help, surprisingly even on non-partitioned tables.
You need to release schema changes while the SQL Server is in use. Learn why code generation tools write odd scripts and how to stay sane amid rapid releases.
Does your team know what it's doing with SQL Server? Learn what a consultant looks for when assessing a team, and signs that SQL Server may be badly configured.
The first time you test a query it's slow, but when you run it again, it's much faster. Learn how SQL Server uses memory to make the second run much faster.
