Which services have been created during the installation? After installing a SQL Server instance, I typically look at the installed services with the customer or training participants. During installation, the “SQL Server Configuration Manager” is set up and linked in the Windows Start menu. The advantage of this interface is that only the services...

Now and then, smaller, or larger problems arise during consulting missions involving MySQL, which we would like to report here. In this case, our customer wanted to replace a MySQL single instance with a MySQL InnoDB cluster with three nodes. We have reported about the cluster here several times and do not discuss it in detail here. In this specifi...

In many cases, database accounts accumulate over many years. Especially if no IAM (Identity Access Management) or “Singe-Sign-On” solution is used, the situation arises that accounts “remain lying around” although the real existing user is no longer in the company. Unfortunately, there is no internal system view (table / view) that directly answers...

When using Windows authentication for a connection to a Microsoft SQL Server, Kerberos is the first choice. Only if the use of this authentication scheme is not possible, NTLM (NT LAN Manager) is used. This is transparent for the user, and NTLM does not impose any restrictions in most cases. Therefore, in many environments it is not even noticed th...

Many customers operate databases that are constantly growing. This was also the case in this specific instance. Our client operates a very large MariaDB server with several hundred terabytes of data. A large part of the data must remain stored and accessible for regulatory reasons. Changes to this data are no longer made, but must be kept readable....

In database systems, the size of the main memory has a significant impact on performance. The goal is to keep as much relevant data as possible in the memory. Due to the structure of the memory, it can happen that part of the memory contains "air" in a figurative sense that could be used much more sensibly. Fortunately, Microsoft SQL Server provide...