Infrastructure at your Service

SQL Server Archives - Blog dbi services

David Barbarin

Introducing high-availability with SQL Server on Linux

By | Database Administration & Monitoring, Database management | No Comments

A couple of months ago, I did my first installation of SQL Server on Linux. I wrote about it in this blog post. So now it’s time to start the new year by talking about high availability on Linux with SQL Server vNext. Running standalone instances will be suitable for scenarios but I guess introducing high-availability with critical environments still remain mandatory.Currently, the CTP1 supports installing a SQL Server Failover Cluster Instance on the top…

 
Read More
Stéphane Haby

IT-Tage 2016 Informatik aktuell: feedback

By | Technology Survey | No Comments

Today, to finish the year, I post a brief personal impression of the IT-Tage 2016 in Frankfurt at the Hotel Maritim, where I was also be a speaker. I presented 2 sessions on SQL Server: “SQL Server Errorlog Entmystifizierung” & “SQL Server 2016: Neue Sicherheitsfunktionen”. I wasn’t the only one from dbi services who spoke at that conference: David Barbarin with also 2 sessions: “SQL Server – Locks, latches and spinlocks” & “SQL Server 2016…

 
Read More
Stéphane Haby

Live from SQL Saturday Slovenia 2016!

By | Technology Survey | No Comments

After a little trip, just 1-hour flying from Zürich to Ljubljana yesterday, the SQL Saturday Slovenia 2016 begins this morning at the Faculty of Computer and Information Science of the University of Ljubljana… I needed to wake up very fast because my session was the first of the day at 9:00 AM. I also very happy to meet and to share my expertise with Slovenian and other SQL Server experts. My session was about the…

 
Read More
Stéphane Haby

SQL Server on Linux in Azure

By | Technology Survey | No Comments

I’m pleased to announce that Microsoft gives now the opportunity to choose Linux as a new operating system for SQL Server. To try this new version, you can find in the Cloud Azure a new template in the marketplace. In the search bar, tape “SQL Server vnext” and you’ll find the “SQL Server vNext on Red Hat Enterprise Linux 7.2”. Follow all “classic” steps to create your new VM SQL Server on Linux: First step,…

 
Read More
David Barbarin

First installation of SQL Server on Linux REHL 7.2

By | Database Administration & Monitoring | No Comments

As you certainly know Microsoft announced yesterday the first preview of SQL Server vNext on Linux. Obviously we are far from a final version suitable for production and the list of unsupported features will probably be good indicator of the production maturity over the time. So as many people, I could not wait to do a try of installing SQL Server on Linux version. The installation process is well documented and I would like to…

 
Read More
David Barbarin

SQL Server AlwaysOn availability groups and statistic issues on secondaries

By | Database Administration & Monitoring | No Comments

I would like to share with you an interesting issue you may face while using SQL Server AlwaysOn availability groups and secondary read-only replicas. For those who use secondary read-only replicas as reporting servers, keep reading this blog post because it is about update statistics behavior on the secondary replicas and as you may know cardinality estimation accuracy is an important part of the queries performance in this case. So a couple of days ago,…

 
Read More
Stéphane Haby

SQL Server 2016 – R Services Tips: How to find installed packages using T-SQL?

By | Development & Performance | No Comments

If you have restricted access to the server and you do not know if your packages are installed on the SQL Server with the R Services, you have the possibility to do it by T-SQL. The R command/function to use is “installed.packages()”. As you can read in the R Documentation for installed.packages(),  this function scans the description of each package. The output is a table with 16 columns with basically these information: Package LibPath Version…

 
Read More
Nathan Courtine

Manage Azure in PowerShell (RM)

By | Database Administration & Monitoring, Hardware & Storage, Operation systems | No Comments

Azure offers two deployment models for cloud components: Resource Manager (RM) and Classic deployment model. Newer and more easier to manage, Microsoft recommends to use the Resource Manager. Even if these two models can exist at the same time in Azure, they are different and managed differently: in PowerShell cmdlets are specific to RM. In order to be able to communicate with Azure from On-Premises in PowerShell, you need to download and install the Azure…

 
Read More
David Barbarin

Partitioning – When data movement is not performed as expected

By | Database Administration & Monitoring | No Comments

This blog is about an interesting partitioning story and curious data movements during merge operation. I was at my one of my customer uses intensively partitioning for various reasons including archiving and manageability. A couple of days ago, we decided to test the new fresh developed script, which will carry out the automatic archiving stuff against the concerned database in quality environment. Let’s describe a little bit the context. We used a range-based data distribution…

 
Read More