The Distributed Availability Group Dashboard can be downloaded from our GitHub repo. https://github.com/SQLUndercover/UndercoverToolbox/blob/master/DAG%20Dashboard.pbix. This comes off of the back of my last post looking at using a distributed availability...
2025-04-14 (first published: 2025-04-01)
285 reads
SQL Server migrations are a headache, ask anyone who’s been through the pain of moving a reasonably large server and I’m sure they will agree. There are all sorts...
2025-02-19 (first published: 2025-02-05)
563 reads
This post comes off the back of my last, where I looked at issues caused by explicitly declaring a large number of values in an IN clause. The query...
2024-12-11 (first published: 2024-12-04)
885 reads
Recently I received a cry for help over Teams. The issue was that an application was throwing up the following SQL error, The query processor ran out of internal...
2024-11-13 (first published: 2024-10-30)
625 reads
“Could you help me, we deleted the database’s transaction log file and now that database is stuck in ‘Recovery Pending’?” This was a panicked call that I received a...
2024-10-14 (first published: 2024-09-26)
504 reads
Full documentation on the Undercover Catalogue can be found HERE We’ve spotted a bug in the Databases module where an unprintable ASCII character was being inserted at the beginning of...
2024-09-12
37 reads
Way back in the mists of time I wrote a post on how to backup SQL server to an S3 bucket using TNTDrive, https://sqlundercover.com/2018/06/18/backup-your-on-premise-sql-server-directly-to-an-aws-s3-bucket/. Back then, if we wanted...
2024-08-26 (first published: 2024-08-13)
228 reads
We’ve been hearing of a few people getting errors from the latest Undercover Catalogue, Powershell interrogation script. The issue seems to be happening when the scripts tries downloading automatic...
2024-07-22
19 reads
Are you struggling with a laggy redo and a build up in the redo queue on your readonly secondaries? Are you suffering with high PARALLEL_REDO_TRAN_TURN waits? Then this magic...
2024-07-31 (first published: 2024-07-17)
305 reads
I recently received a complaint that Query Store for a particular database was turned off, which was strange as that particular database has seen quite a few performance issues...
2024-07-15 (first published: 2024-07-04)
370 reads
On May 8, 2025, we hosted our first official event in Switzerland at Prime...
By Steve Jones
Tomorrow is the Redgate DevOps Day in Atlanta. You can still sign up, so...
By Kevin3NF
Too many IT teams run index rebuild jobs on autopilot. Every night. Every index....
Comments posted to this topic are about the item Are Data Breaches Inevitable?
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In SQL Server, when the buffer manager write pages to disk, page protection is added to the pages. There are two types of protection: torn page protection and checksum page protection. What happens with regards to concurrency with page protection during writes?
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