Microsoft SQL Server in practice: installation, Always On availability groups, backup and restore, performance tuning, security, PowerShell automation, SQL Server on Linux and upgrades.
In this blog post, I will share with you a small PowerShell script I did recently. I have noticed that my customer performs a very repetitive and time-consuming task almost every day. New columns are added to tables on their business-critical database and they need to maintain SQL scripts file with all the ALTER TABLE statements for each new column.…
I made a mistake recently when adding a new node to an existing Windows Failover Cluster supporting AlwaysOn SQL Server instances. When adding a new node using the GUI there’s this option checked by default named “Add all eligible storage to the cluster”. Before performing the operation the disks on the 2 nodes of my cluster were used by the…
By Franck Pachot . In the previous blog post I’ve installed SQL Server on the Oracle Cloud. My goal was actually to have a look at Redgate SQL Clone, a product that automates thin cloning. The SQL Server from the Oracle marketplace is ok for SQL Clone prerequisites. There’s a little difference in .NET Framework version (I have 4.6 where…
By Franck Pachot . You can create a VM with SQL Server running in the Oracle Cloud. This is easy with a few clicks on the marketplace: Here are the steps I did above: Oracle Cloud -> Marketplace -> Application -> Category -> Database management You have multiple flavors. I’ve chosen the lastest cheaper “Microsoft SQL 2016 Standard with Windows…
In this blog post, I will show you what I did to troubleshoot an interesting problem with Memory on SQL Server. It all started with a job performing DBCC CHECKDB on all databases taking hours to complete instead of 10 minutes. So the Job ran outside of its maintenance window, still running in the morning when users come back to…
Today I faced a strange issue when I tried to install a new SQL Server instance : Failed to retrieve data for this request This error occurred just after clicking on “New SQL Server stand-alone installation…” The error message is not helpful at all. So, the first step to troubleshoot an issue is to look at the error logs. The…
I’m doing some cleaning on my customer’s instances. I want to delete the login of a previous DBA for 2 reasons; this person does not work anymore in my customer’s company and all DBA are members of a group that is given permission on the instances. I don’t want to see any DBA’s personal login on SQL Server instances. When…
What is Linked server ? Now a days in each company we have different applications and each one of them have different needs in term of databases support. When data exists on multiple databases the management become a little bit hard. For exemple moving some data from an Oracle database to a SQL Server database is not easy. A linked…
By Franck Pachot . J’essaie quelque chose de nouveau. Je publie beaucoup en anglais (blog, articles, présentations) mais cette fois quelque chose de 100% francophone. En sortant du confinement, on reprend les transports (train, voiture,…) et c’est l’occasion de se détendre en musique mais aussi de s’informer avec des podcasts. J’ai l’impression que c’est un format qui a de l’avenir:…
By Franck Pachot . I’ll reference Alex DeBrie article “SQL, NoSQL, and Scale: How DynamoDB scales where relational databases don’t“, especially the paragraph about “Why relational databases don’t scale”. But I want to make clear that my post here is not against this article, but against a very common myth that even precedes NoSQL databases. Actually, I’m taking this article…
Introduction RDS provide automatic backup feature. This feature will backup the entire RDS instance. As a DBA sometimes you need to backup individual database, they are many reason for that (legal, migration, replication,…). Unfortunately individual database backups are not available within the RDS instance. This post explains how you can enable the native database backup on RDS , as you…
SQL Azure Database by default offers a 99.99% availability SLA across all its service tiers. This means that for any database, the downtime should not exceed 52 minutes per year. Using Zone redundancy increases availability to 99.995% which is about 26 minutes per year. These impressive numbers can be achieved through in-region redundancy of the compute and storage resources and…
