Database scoped configuration options change how one database behaves, without touching the server. This post lists all 41 options on SQL Server 2025, finds the 7 ids that are missing, and changes and restores two settings in a demo database. It also answers the old question about configuration id 5.
SQL Server emergency? Email pinal@sqlauthority.com with URGENT in the subject line.
Missing tempdb Files: master_files vs database_files
Missing tempdb files show up as a mismatch between sys.master_files and tempdb.sys.database_files. This post compares the two with a query, simulates the missing files on a copy of the catalog, and shows the error log message that gives the cause. The fix is to correct the path and restart.
Why Query Cost Percentages in a Plan Mislead You
Test why query cost percentages are estimates by comparing two statements with STATISTICS IO, TIME, and query DMV counters.
Memory Grant Feedback Events: Capture Them in T-SQL
Memory grant feedback events list every query whose memory grant keeps changing, and the moment SQL Server gives up on it. This post creates the Extended Events session in T-SQL, watches it live in SSMS and reads it with one query that names the procedure.
Comparing a Good and a Bad Plan for One Query in Query Store
Compare a good and a bad plan in Query Store using runtime history, SSMS Compare Showplan, estimates, joins, grants, and parallelism.
SQL SERVER – MemoryGrantInfo Property Explanation
I have been writing about the Memory Grant Feedback feature. Today we will discuss various properties of MemoryGrantInfo in this blog post.
MemoryGrantInfo – What are Different Status of IsMemoryGrantFeedbackAdjusted? – Interview Question of the Week #253
Question: What are Different Status of IsMemoryGrantFeedbackAdjusted (MemoryGrantInfo Property)? Today we will see a consolidated answer to this question.
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Who We Are
Pinal Dave is an SQL Server Performance Tuning Expert and independent consultant with over 24 years of hands-on experience. He holds a Masters of Science degree and numerous database certifications.
Pinal has authored 19 books and 125 Pluralsight courses. To freely share his knowledge and help others build their expertise, Pinal has also written more than 5,800 database tech articles on his blog at https://blog.sqlauthority.com.
Pinal is also a CrossFit Level 1 Trainer (CF-L1) and CrossFit Level 2 Trainer (CF-L2).
Nupur Dave is a social media enthusiast and an independent consultant. She primarily focuses on the database domain, helping clients build short and long-term multi-channel campaigns to drive leads for their sales pipeline.
Shaivi Pinalkumar Dave is a book author and a women’s artistic gymnast.

