/tags/sql-server/ Recent content in SQL Server on ArcticDBA - Alexander Arvidsson Hugo -- gohugo.io en Tue, 08 Sep 2026 00:00:00 +0000 /posts/t-sql-tuesday-202/ Tue, 08 Sep 2026 00:00:00 +0000 /posts/t-sql-tuesday-202/ Back in 2015, I was debugging a SQL Server cluster that worked perfectly. Except when it didn’t. Connections timed out randomly, failovers failed silently, and nothing made sense. I was sure it was DNS. It was DNS. But that wasn’t the real problem. The real problem was me, seeing exactly what I expected to see instead of what was actually there. Turns out, pilots and DBAs have something important in common: expectation bias can really mess you up.