As you might already know that I am a SQL Server Performance Tuning Expert who also acts as a “on-demand consultant” for many organizations across the world who have performance tuning or any other issue related to SQL Server. Once I was working with one of my clients and their DBA asked a question. In this blog, we would learn about possible ways to handle a situation where DBCC CHECKDB is indefinitely waiting for PREEMPTIVE_OS_DEVICEIOCONTROL.
As soon as a new version of SQL Server is announced, I always try to find new things and update my old post with new information or write a new post. In this blog, we would learn about new function introduced in SQL Server 2019 which is a partial replacement of DBCC PAGE.
If you have not heard about the capability of DBCC PAGE then you can look at my earlier blog on the same topic. SQL SERVER – Identifying Page Types
Earlier this week, we were fortunate to receive an amazing script to overview HADR / AlwaysOn Local Replicate server from SQL Server Expert Dominic Wirth. You can read the amazing script here: Scripts to Overview HADR / AlwaysOn Local Replica Server. As a follow up to the previous conversation today I received another extremely helpful script from Dominic Wirth which I will be using with my customers every single day. In this blog post, we will see the script which will Monitor Estimated Completion Times for Backup, Restore and DBCC Commands.
Recently during Comprehensive Database Performance Health Check, I was asked a fascinating question. They wanted to know why suddenly their DBCC CHECKDB process started to run very very slow.