In SQL Server 2012 onwards, the cluster health check detection logic has been enhanced. Instead of the traditional pull mechanism of the cluster (IsAlive and LooksAlive), SQL Server (version 2012 onwards) uses a push mechanism to detect the health of the SQL instance. This is done by special stored procedure called sp_server_diagnostics. We should remember that the failover mechanism for the AlwaysOn FCI and the AlwaysOn Availability Groups is same.
How to Round Up or Round Down Number in SQL Server? – Interview Question of the Week #125
Question: How to Round Up or Round Down Number in SQL Server?
SQL SERVER – AlwaysOn Join Error – Msg 1408, Level 16 – The Remote Copy of Database “SQLAUTH” is Not Recovered Far Enough to Enable Database Mirroring or to Join it to the Availability Group
I do provide consultancy services for deployments, including AlwaysOn availability group deployments. AlwaysOn Join Error.
SQL SERVER – Alternate to AGENT_DATETIME Function
Sometimes back I posted about interesting function AGENT_DATETIME functions which will convert integers into datetime values. Someone commented that there might be some permission issues using this function which is only available in msdb database. So I write this post to give you alternate method without using any such functions.
SQL SERVER – Master Database in Single User Mode – A Serious Issue
There are some weird situations which I see in SQL Server. This is also a one of the surprising situation. One of my client reported via below screen shot. Let us see the issue of Master Database in Single User Mode.
SQL SERVER – FIX : Error: 3456, Severity: 21 – Could not redo log record (xx:xx:xx), for transaction ID (x:xx), on page (x:xx), database ‘master’
While I work on performance tuning most of the time, I do provide consultancy on issues which can be resolved quickly. These are the engagement where I get a lot of content for my blogs as well. Let us learn about the error related to redo log record.
SQL SERVER – How to Install SSMS From Command Line? Error: The Specified Value for Setting ‘MEDIALAYOUT’ is Invalid.
There are many DBAs who like to automate the deployment of SQL. It is not fun to use wizard in all the installations. Imagine that setup media is kept in a remote share and all you need to do is provide a batch file to run and it would take care of installation. Let us learn How to Install SSMS From Command Line?
SQL SERVER – xp_logininfo – Msg 15404: Could not obtain information about Windows NT group/user, error code 0x2147
One of my client was running into the below error running xp_logininfo on some of their users. It was interesting that when they run the script to capture user information it works for the same user in another domain. They asked me if there is anything specific they can look for to find out the difference between the two users in the different domains?
How to Insert Results of Stored Procedure into a Temporary Table? – Interview Question of the Week #124
Question: How to Insert Results of Stored Procedure into a Temporary Table?
SQL SERVER – Unable to Change “Shared Feature Directory” Under Feature Selection
There are many times when internet has answers to many questions. To get the right answer, you need to search for the right keyword and it comes from practice. Let us learn how we can fix the error Unable to Change “Shared Feature Directory” Under Feature Selection.