The Case of the NULL Query_Plan
As a DBA, we're often asked to troubleshoot performance issues for stored procedures. One of the most common tools at...
2013-09-06 (first published: 2013-09-03)
3,245 reads
Patrick
- Twitter: @patrickkeisler
- Website: https://www.patrickkeisler.com
- LinkedIn: https://www.linkedin.com/in/patrickkeisler/
How to Tell If Your Users are Connecting to the Availability Group Listener
You've spent a lot of time planning and building out a new SQL Server 2012 environment complete with Availability Group...
2013-08-29 (first published: 2013-08-27)
2,353 reads
PASS Summit 2013 - You Ain't From Around Here Are Ya?
I know what y'all are thinkin', what's Charlotte got to do with SQL Server? Just hear me out. There's a...
2013-08-20
1,275 reads
Are You the Primary Replica?
UPDATED -- Jul 3, 2015 -- To verify database exists, per comments by Konstantinos Katsoridis. Thanks for finding the bug!
In my recent adventures...
2013-07-23
1,623 reads
Setup an Availability Group with Multiple Subnets in VMware Workstation
Before we get started, I want to make it clear this is NOT how you would normally configure all these...
2013-07-16
2,410 reads
VMware vSphere Storage Performance - Thick vs Thin Provisioning
Industry experts will tell you that virtualization of your environment is not done to improve performance, it's done to make...
2013-06-25
4,262 reads
Investigating Plan Cache Bloat
SQL Server includes a DMV, sys.dm_exec_query_stats, that returns performance statistics for each query plan cached in memory. However, it can...
2013-05-28
1,130 reads
An Alternative to SELECT COUNT(*) for Better Performance
Sometimes rapid code development doesn't always produce the most efficient code. Take the age old line of code SELECT COUNT(*)...
2013-05-07
5,267 reads
Merging SQL Server and Softball Just for Fun
With opening day of Major League Baseball season finally here, I thought I’d take the time to cover two of...
2013-04-02
1,263 reads
Use Powershell to Pick Up what Database Mirroring Leaves Behind
Database mirroring has been around since SQL Server 2005, and it's turned out to be an excellent step up from...
2013-03-26
2,434 reads
Blogs
Migrate datetime data to datetimeoffset with AT TIME ZONE
By Will Assaf
I recently reviewed, worked on, and added a similar example to the DATETIMEOFFSET Microsoft...
The Comprehensive Guide to Mastering Your SQL DBA Skills
Database administrators (DBAs) are the backbone of data-driven organizations. If you're looking to break...
Friday Basics: Authentication vs. Authorization
By Brian Kelley
Another security fundamentals topic is authentication versus authorization. For those who have a clear...
Forums
The OS returned the error '(null)' while attempting 'DeleteFile' filestream.hdr
I have a SQL Server 2019 Enterprise Edition on CU 25. It has in-memory...
Performance
Experts, I am learning some skills so I can troubleshoot some performance-related issues. I...
Question of the Day
Two Table Hints
What happens when I run this code:
SELECT p.ProductName , p.ProductCategory FROM dbo.Product AS p WITH (NOLOCK, TABLOCK);See possible answers