A reader attached a client database and it showed as Read Only. Two simple ALTER DATABASE scripts switch a database to READ_ONLY and back to READ_WRITE.
SQL Server emergency? Email pinal@sqlauthority.com with URGENT in the subject line.
SQL SERVER – Finding Location of Log File when Primary Datafile is Crashed
Do you need the primary datafile to back up the log after a crash? Vinod Kumar asked, so I tried finding the location of the log file without it.
SQL SERVER – Transaction Log Impact Detection Using DMV – dm_tran_database_transactions
Which DMV shows the effect of a transaction on the transaction log file? My quick script uses dm_tran_database_transactions to show it per transaction.
SQL SERVER – FIX – ERROR : Msg 3201, Level 16 Cannot open backup device . Operating system error 5(Access is denied.)
Msg 3201, cannot open backup device, operating system error 5 (Access is denied). The SQL Server service account needed permission on the disk.
SQL SERVER – Query to Recent Query on Server with Execution Plan Function to Get SQL
For T-SQL Tuesday on the APPLY clause, I share the script I use to see each recent query on server along with its execution plan from the cache.
What Is ETL? Extract, Transform and Load Explained
ETL means extract, transform and load, and only the middle word is interesting. What each stage really does, why transform eats most of the schedule, and what changes when a team says ELT instead.
SQL SERVER – TempDB in RAM for Performance
TempDB in RAM needs a review of capacity, support and memory pressure. I compare those costs with the bottleneck it would address.
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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.

