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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.

More tips and tricks

Load Factor – Uneven load distribution
by Michal Kovaľ on 15/06/2022

Recently, we found an interesting pattern during exploring one of our SMT graphs while doing a health check of a SQL server. The following graph shows us the Load Factor attribute. The value came from system table sys.dm_os_schedulers, which the SMT tool

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When SQL Server 2022 Talks Too Much to Windows: Solving the PREEMPTIVE_OS_QUERYREGISTRY Mystery
by Michal Kovaľ on 28/05/2026

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.

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SQL Konferenz 2026
by Mikuláš Mráz on 12/03/2026

Earlier this month we attended SQL Konferenz 2026, held at Congress Park Hanau, just outside Frankfurt. The venue is large and perfectly suited for conferences, which the name itself already suggests.

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