SQL SERVER – Database Mirroring Login Attempt Failed With Error: ‘Connection Handshake Failed. An OS Call Failed: (80090350)

While Microsoft has introduced an AlwaysOn availability group feature in SQL Server 2012 and people have been using it instead of database mirroring. In this blog, we would learn how to fix error Database Mirroring login attempt failed with error: ‘Connection handshake failed. An OS call failed: (80090350).

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SQL SERVER – Error 9002: The Transaction Log for Database ‘SQLDB’ is Full Due to ‘DATABASE_MIRRORING’

It is interesting to see in SQL Server that same error message is raised due to multiple reasons. One such error is 9002. In this blog, we would quickly learn about the cause of error 9002: The transaction log for database ‘SQLDB’ is full due to ‘DATABASE_MIRRORING’

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SQL SERVER – Unable to Start SQL After Patching – Database SSISDB is Enabled for Database Mirroring

I do apply patches to my SQL instances as and when they are released by Microsoft. This is important because I always feel keeping the bits up-to-date is essential because I don’t want to get infected as I travel quite a bit. Since I play a lot with my SQL Server, there are more chances that things are going to break sooner than your production server. Here is one such incident. Let us learn about how to fix script level upgrade. Let us learn how to fix the error related to SSISDB. 

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SQL SERVER – Mirroring Error 1456 – The ALTER DATABASE Command Could not be Sent to the Remote Server Instance

As a part of my consulting, I still get few clients who prefer to use database mirroring over Always On Availability Group. In this blog we would cover about one possible cause of database mirroring Error 1456 – The ALTER DATABASE command could not be sent to the remote server instance.

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SQL SERVER – Always On Availability Group Error 35250: The Connection to the Primary Replica is Not Active

Along with my performance consulting, I have also assisted many clients in fixing some quick issues. You can refer for various consulting services which I provide. During my consulting with various clients about Always On deployment, one of the commonly reported errors as below.  (I have changed the AG Name, Node names to be more generic). Below came when we used the wizard to create an availability group. Let us learn how to fix error related to primary replica. 

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