SQL SERVER – FIX: Database Diagram Error 15517 – Cannot Execute as the Database Principal Because the Principal ‘dbo’ Does Not Exist

Today’s blog post is directly inspired by the conversation I had during my Comprehensive Database Performance Health Check. During the consulting engagement, one of the developers reported below error in the database while trying to open a database diagram.

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SQL SERVER – FIX: The specified instance of SQL Server is hosted by a system that is not a Windows Server Failover Cluster(WSFC) Node.

Sometimes if the sequence is not followed correctly, we might see some weird errors. In this blog, we would learn how to fix always on an error while adding new replica “The specified instance of SQL Server is hosted by a system that is not a Windows Server Failover Cluster(WSFC) node.”

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SQL SERVER – How to Drop All the Hypothetical Indexes of Database?

Earlier I wrote a blog post SQL SERVER – Say No To Database Engine Tuning Advisor and I got an email from my existing client where I frequently engage for Comprehensive Database Performance Health Check. They wanted me to help them remove all the negative impact of the Database Engine Tuning Advisor (DTA). I was able to help them achieve this by removing the Hypothetical Indexes they had added using the DTA.

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SQL SERVER – SQL Service Not Getting Started Automatically After Server Reboot While Using gMSA Account

This was the first experiment with gMSA account in my lab and I faced an interesting issue. In my lab environment, I have a complete domain server and member servers. Once I configured gMSA for SQL Server service and restarted the machine, SQL Service didn’t start automatically even though it was set for an automatic startup as shown below.

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