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Visual representation of database health check.

Database Performance Health Check: Six Months Slow, Fixed in 75 Minutes

July 21, 2026
Pinal Dave
SQL Performance
Comprehensive Database Performance Health Check, SQL Wait Stats

Six months of slow SQL, fixed in 75 minutes. See what a database performance health check finds, and how one focused 4-hour session ends the guessing.

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Consultant and Robot on Fire.

Hire AI and Not Me: Human Can Make Mistakes

February 25, 2026
Pinal Dave
AI
AI, Comprehensive Database Performance Health Check, SQL Index

Let me tell you something that took me a long time to say out loud. Human Can Make Mistakes Not AI. (Well, line inspired from famous GenAI tool).

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Farmers running down road with query performance train.

SQL SERVER Performance: When MAXDOP = 1 Slowed Down the Entire Business

July 25, 2025
Pinal Dave
SQL Performance
Comprehensive Database Performance Health Check, MAXDOP, SQL CPU, SQL Wait Stats

Slow reports, slow transactions, and the internal team could not find why. In this case study, MAXDOP = 1 was quietly slowing down the entire business.

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Expertise

The Wisdom of Knowing Where to Tap: Value, Expertise, and Pricing

November 7, 2023
Pinal Dave
SQL Performance
Comprehensive Database Performance Health Check

Comprehensive Database Performance Health Check. Let us learn about The Wisdom of Knowing Where to Tap: Value, Expertise, and Pricing.

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Comprehensive Database Performance Health Check

The Value of Skill: A Comprehensive Database Performance Health Check

November 6, 2023
Pinal Dave
SQL Performance
Comprehensive Database Performance Health Check

Here are the details Comprehensive Database Performance Health Check. This investment can generate significant returns.

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A caulking gun with a stuck cartridge holding up the work at its nozzle

Blocking Alert: A T-SQL Check for Sessions Blocked Too Long

September 6, 2023
Pinal Dave
SQL Tips and Tricks
Best Practices, Comprehensive Database Performance Health Check, SQL Server

Short blocking is normal. This check flags lock waits past a threshold and walks each chain to the session at the front of the line.

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Title card: PREEMPTIVE_OS_RSFXDEVICEOPS Wait Type

SQL SERVER – Identifying and Fixing PREEMPTIVE_OS_RSFXDEVICEOPS Wait Type

October 5, 2019
Pinal Dave
SQL Performance
Comprehensive Database Performance Health Check, Filestream, SQL Server, SQL Wait Stats

I walked into a client engagement where I really got stuck with a very interesting scenario with a client with PREEMPTIVE_OS_RSFXDEVICEOPS Wait Type.

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