SQL Server provides two different forms of authenticating the users that connect to the database server: Windows Authentication, which is the default and preferred method, and SQL Server Authentication, which needs to be explicitly enabled.
This post aims to give you a brief introduction into what isolation levels are and how they work within SQL Server. In short, they are a measure for controlling concurrency on the server.
Managing SQL Server production databases can become a nerve-wracking situation for administrators, especially when your organisation or business can have hundreds of databases that are vital to its existence and commerce.
Performance analysis can be a tricky landscape at the best of times and looking at the performance of your SQL Server is no different. An initial glance at your recent high CPU usage can often spiral into a lengthy investigation, deviating far from the initial investigation.
In this blog I aim..
Following on from my recent blog post on locking, a level deeper in the concurrency chain leads us to latches. A lot of people will have heard of them or will have seen the related waits within SQL, for example in the sys.dm_os_wait_stats DMV, but, I would wager, not many people could give me a..
We have all heard of locks and can probably even name a few; shared or exclusive locks, for example. We notice them more when something goes wrong and we run into blocking or other performance problems, but what are locks and how do they work in SQL Server?
In this blog, I aim to give a basic..
Today I want to tell you about an issue we ran into while working on one of our customers and, while it’s easy to understand when explained, it might be tricky to get done when you don’t look at the whole picture.
It’s been a while since I last wrote about my favourite piece of tech, which is not the latest neither sometimes the greatest, but we’ve been together for over a decade now and I still love it. That is the SQL Server engine.
So, you're supporting a server. It might be yours directly, it might belong to a customer. Doesn't matter. You've got an urgent issue - an alert, a ticket, an end-user reporting a problem - and you need to get moving. Where do you start? Everyone has a method, and if you haven't developed yours..
Amidst the COVID-19 pandemic, businesses have been forced to implement short-medium term plans to protect not only their ability to transact, but also the health and wellbeing of their customers, partners and employees. Video calls, queueing at shops (and on websites) and home deliveries have..