Comprehensive Database Performance Health Check Client sent me an SOS message for help . The entire issue was about Page and Row level compression.
SQL SERVER – Difference Between Login Vs User – Security Concepts
In this blog post, we discuss the difference between Login Vs User – Security Concepts. They look the same but actually, they are totally different.
SQL SERVER – Fix Error – Login failed for user. Reason: Server is in script upgrade mode. Only administrator can connect at this time. (Microsoft SQL Server, Error: 18401)
I recently had a very simple and interesting error received while I was performing an upgrade mode with Docker and Persistence Storage for my upcoming workshop.
When Was SQL Server Last Restarted? – Interview Question of the Week #225
Question: When Was SQL Server Last Restarted?
Docker – Running SQL Server Image Without Running Pull Command
I have been using Docker for a while to run the latest CTP of SQL Server 2019 and it has been so far amazing ride to use the product. Every time when new CTP is released, I learn something new with Docker. This time I learn that I can just run SQL Server Image without running pull command. Let us discuss it in this blog post.
SQL SERVER – Download and Install SQL Server Sample Databases (Updated Post for 2019)
My primary task is to do consultation for SQL Server Performance Tuning. I always use Microsoft provided sample databases for my demonstrations.
SQL SERVER – Stored Procedure sp_datatype_info to Get Supported Data Types
I get to work with various different versions and environment when I am busy with my clients with Comprehensive Database Performance Health Check. While I work with different customers often I forget what data type is supported by which version of SQL Server. Here is a small quick trick, I use all the time when I need to know what are the different data types supported by the version I am working with.
SQL SERVER – Automatic Seeding of Availability Database ‘DB’ in Availability Group ‘AG’ Failed With an Unrecoverable Error
While deploying Always On Availability Group with a client, they found that when they use automatic seeding, the database was not shown on secondary. After digging more, we found that it was there earlier in “Restoring” state when seeding was in progress but then it automatically disappeared from the list of databases on secondary. Here is the option in the wizard.
SQL SERVER – T-SQL Script to List Automatic Seeding of Always On Availability Group
I love blog post which just solves a simple point and immediately gets us the necessary answer. Recently during one of the consulting engagement Comprehensive Database Performance Health Check at one of my customer place we identified a wait statistics which was related to SQL Server Always On Availability Group. The wait statistics issue was VDI_CLIENT_OTHER and the way to solve is blogged here SQL SERVER – Many BACKGROUND Threads with Command VDI_CLIENT_WORKER. We needed to remove automatic seeding to reduce the said wait statistics.
SQL SERVER – Getting Started with Accelerated Database Recovery – Instant Rollback
There are many reasons to envy my job as SQL Server Performance Tuning Expert Consultant but the most important reason is that I get to work on quite often the latest version of SQL Server. Just the other day I had an early adopter customer who was using SQL Server 2019 for their environment and they wanted me to help them with the new feature of Accelerated Database Recovery.