I was recently asked about T-SQL Snapshot backups on secondary replicas, which I hadn’t looked at for many years as it’s kind of a niche item. I was definitely surprised to find little caveats here and there, thus you get this wonderful post. If you’re unfamiliar with T-SQL Snapshot backups, it’s a way to flush […]
This used to be a very hot topic around SQL Server 2016 when automatic seeding first came out, then everyone learned how automatic seeding was just manual seeding but done for you and the topic went away. A decade later, it’s somehow back to being a hot topic. I guess all that is old is […]
I meant to write this almost a year ago, but then I was asked to take a look at high cluster service privileged time usage and realized I had forgotten! I guess better late than never? If you’re using WSFC integrated AGs (cluster_type = WSFC) then the cluster database is the location in which availability […]
I have a long history shitting on CrowdStrike – and well, with their past it’s pretty warranted – but antivirus software is general does bother the hell out of me. You’re essentially installing something that interrogates everything on your system and injects itself everywhere hoping it stops a known issue but generally ends up causing […]
Contained Availability Groups are the most recent update to the Availability Groups feature, and a great update at that! They are completely new in SQL Server 2022, and like any new feature (or even mature ones) there will be some bugs. Enter in some Access Violations (AVs) that may occur when creating a new contained […]
Read Scale Availability Groups can be pretty useful in the right places and for the right things and were a latest feature update for AGs until Contained AGs came along in 2022. Read Scale AGs don’t integrate with clustering of any type and they behave somewhat as mirroring used to where there is no real […]
The first video olved stery! In this one we look at an FCI node that will not come online after patching. Issue Introduction This was an issue I almost forgot about, during the patching of an FCI to a new CU, the inactive server patches without an issue – all is well. Upon attempting a […]
I don’t often find many people using FileStream in their databases (which isn’t a bad or good thing, in my opinion, just a statement of fact). Some technologies in SQL Server use it behind the scene, such as FileTable or Hekaton, and there isn’t really any getting around it in those cases. However, I was […]
There was a question that came up on the MCM mailing list about what are these files: model_msdbdata.mdf, model_msdblog.ldf, model_replicatedmaster.mdf, model_replicatedmaster.ldf? It was pointed out that the files don’t show up in the typical DMVs and seem to not really be used at the moment. These are the databases used as the basis for the […]
Setup If you’re using availability groups with read-scale or linux (cluster type = None/External), you might want to watch the number of databases put into a single availability group. There seems to be an issue where having a very large number (~200) of databases in an AG works without issue, however going higher may result […]
