Few days ago I have noticed that there will be a change (again) in certification paths for next generation of SQL servers. So I would like to recommend some thoughts about this from Microsoft Certified Masters (MCM) of Brent Ozar PLF Company.
Michal Tinthofer is the face of the Woodler company which (as he does), is fully committed to complete support of Microsoft SQL Server products to its customers. He often acts as a database architect, performance tuner, administrator, SQL Server monitoring developer (Woodler SMT) and, last but not least, a trainer of people who are developing their skills in this area. His current "Quest" is to help admins and developers to quickly and accurately identify issues related to their work and SQL Server runtime.
You open your performance analytics tool to check the top wait types, expecting the usual suspects like PAGEIOLATCH or CXPACKET. Instead, staring back at you is a strange, rarely seen wait type: PREEMPTIVE_OS_QUERYREGISTRY.
Read moreLast week, between the 11th and 13th of May 2026, we once again returned to SQL Day in Wrocław.
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