alzdba

  • Interests: family, mantrailing / dogs, riding my motorbike, volleyball

SQLServerCentral Article

Windows Clustered MSDTC and SQL Server 2019 mishap

Introduction As you may know, in the early days of SQL Server Clustering, Microsoft advised to provide each clustered SQL Server instance with its own Microsoft Distributed Transaction Coordinator (MSDTC) resource. Since SQL Server 2012 this advice has been withdrawn. Microsoft now recommends to provide your instance with its own MSDTC resource, once you notice the […]

5 (4)

You rated this post out of 5. Change rating

2025-04-04

2,511 reads

SQLServerCentral Article

Logon monitoring in SQL Server and Azure Managed Instances - Adopting Extended Events

Intro In 2008 I wrote an article called “Scope: The drastic caveat with Logon Triggers.” Ever since, we have been using Event Notifications to capture logins for our SQL Server instances. Issues were only very rare, usually on servers that had an extreme load of many connections. In such a case, we stopped this continuous monitoring and […]

5 (5)

You rated this post out of 5. Change rating

2021-10-29

4,726 reads

Blogs

TSQL Tuesday #188 Growing community

By

I am responding late to a T-SQL Tuesday invite from John Sterrett. John’s call...

Time to Revive our YouTube Channel

By

It’s been forgotten about and neglected for few years but I’ve decided to dust...

Microsoft MVP 2025: Continuing the Data Platform Journey

By

I am honored to announce that I have been renewed as a Microsoft MVP...

Read the latest Blogs

Forums

How a Legacy Logic Choked SQL Server in a 30-Year-Old Factory

By Chandan Shukla

Comments posted to this topic are about the item How a Legacy Logic Choked...

Navigating Multi Platform Realities in My Database Life

By dbakevlar

Comments posted to this topic are about the item Navigating Multi Platform Realities in...

Import/Export SSMS Settings issue

By Brandie Tarvin

I have tried a number of times to export and then import my SSMS...

Visit the forum

Question of the Day

Query Plan Regressions --

For the Question of the day, I am going to go deep, but try to be more clear, as I feel like I didn't give enough info last time, leading folks to guess the wrong answer... :) For today's question:  You’re troubleshooting a performance issue on a critical stored procedure. You notice that a previously efficient query now performs a full table scan instead of an index seek. Upon investigating, you find that an NVARCHAR parameter is being compared to a VARCHAR column in the WHERE clause. What is the most likely cause of the query plan regression?

See possible answers