Infrastructure at your Service
As a consultant at dbi services we can dedicate a significant part of our time to training and I took the opportunity today to attend an online conference. In this blog post, I will present this event and one of the sessions that particularly interested me. The event I followed is the Virtual Symposium – SQL Server & Azure SQL organized by SQLServerGeeks. It’s a free event that can easily be followed on Zoom but…
Introduction When performing an audit on an SQL Server VM the first thing the system administrator told me was that there’s no issue with the CPU on this box, the monitoring shows it’s always around 50% usage. Problem Here is the Task Manager: The average CPU usage on this VM is indeed 50% but half of the cores are stuck at 100%. There are two SQL Server instances installed on this server but they are…
Introduction In a previous blog post, I did a T-SQL script reading Audit files to send emails with valuable information about instance changes. In this one, you will see how to get nice emails from critical errors or specific events occurring on the instance using the ErrorLog. A common best practice for any DBA is to configure SQL Server Agent Alert for errors with severity 17 to 25. Alerts are also often set for less…
This week I noticed some slowness on queries related to backup history. The instance had a huge msdb database (more than 10GB size), the backup history had never been purged. I already wrote a post on this topic and provided a small PowerShell script using dbatools to clean the backup history. The issue with sp_delete_backuphistory or Remove-DbaDbBackupRestoreHistory is that the operation is done as one transaction and this could badly impact the msdb transaction log…
It’s every time hard to replace a login who as role and permissions in every database like the service account for SCOM. In the previous version of Scom, you create a service account (dbi\scom) to access the SQL Server and check the health of the databases. Now it’s possible to use the System Center Operations Manager Health Service (NT SERVICE\HealthService). To do this change on all SQL Servers, I write a script. I create the…
Introduction Very often with our customers, there is only one person with the DBA role. The configuration of the instances is then under control and if anything strange has to be questioned, the culprit is quickly identified. 🙂 When many people, not necessarily having DBA knowledge, have high permissions (sysadmin) on instances it becomes important to know who does what. In this blog post, we will see how to get notified by email when certain…
In the blog post, I will share a case of troubleshooting a connectivity issue with SQL Server. The problem occurred in a migration context. The SQL Server databases (in version 2008 to 2014) from multiple applications were consolidated on a new server with SQL Server 2019. Application servers were also migrated to new VMs. The new servers are hosted on a brand new infrastructure managed by a third-party provider which my customer has very little…
I’m currently working on the migration of a Failover Clustered SSAS instance from Windows Server 2012 to Windows Server 2019. The context is quite complex and in order to choose the right migration scenario I need to play with it on my LAB environment first. I usually work with AlwaysOn architectures and it’s not often that I need to set up an FCI with its Cluster Shared Volume. As a reminder, a Cluster Shared Volume…
Based on the blog “Copy or Migrate a SSISDB environment” of my colleague Christophe, I create a new one named 2.0. In the precedent script, you need to give the folder name and environment name and he generates all environment variables for these 2 parameters. In my case, I need to generate all folders and what are in these folders. The 2.0 script will generate the creation of the folder and the environment name if…
Introduction You will find a lot of blogs explaining how to install the PolyBase feature with a SQL Server database instance. You will also learn how to configure it and how to use it in these blogs. But I could not find any solution for one case I was faced to. When you have several SQL Server instances on a server you will either allocate a fix port per instance or a dedicated IP per…
