SQL Server blocking, told as a choose-your-own-path story. You are the on-call DBA. The phone has gone. The diagnosis and the kill were run in the lab on SQL Server 2025 and measured. The other branches are reasoned, and the text says which is which.
SQL Server Deadlock, Slow-Cooked: A Recipe That Serves Two Sessions
A SQL Server deadlock, written up the way a recipe card is written. Ingredients, prep, method, and what to do when the sauce splits. It reproduces on SQL Server 2025 every time, and I have the timestamps and the deadlock graph to prove it.
NOLOCK Double Counting: One Employee, Two Lunches
NOLOCK double counting is how three people in a lunch line turn into four lunches. Nothing was inserted. One row moved ahead of the scan and got read twice. I tested it on SQL Server 2025 and share a query that catches it on your own table.
NOLOCK Can Miss Rows: The Order That Was Never Missing
Yes, NOLOCK can miss rows. A row can vanish from your report while it sits safely in the table. Nobody deleted it. The read simply walked past it.
NOLOCK: Why It Counts Some Rows Twice and Misses Others
Everybody knows NOLOCK can show uncommitted data. Far fewer know why it counts some rows twice and misses others, with nothing rolled back. Let me show you.
The Locks, Blocks, and Deadlocks of SQL Server: Unraveling the Knots
SQL Server is no exception. However, it often leads to three common phenomena – locks, blocks, and deadlocks. SQL Diagnostic Manager SQL Server
SQL SERVER – Locking, Blocking, and Deadlocking: Differences, Similarities, and Best Practices
Understanding SQL Server Deadlocks: A Beginner’s Guide, and after reading it, lots of people have asked me the difference between Locking, Blocking, and Deadlocking.