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SQL Server failover cluster, VSphere, & SCSI-3 reservation nightmares
When I have to install a virtualized SQL Server FCI at a customer place as an SQL Server consultant, the virtualized environment usally is ready. I guess this is the same for most part of the database...
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Windows Server 2012 R2: solving .NET Framework 3.5 installation problems
I faced a problem at a customer site last week when I tried to install the .NET Framework 3.5 – a prerequisite for installing SQL Server 2012 on a Windows Server 2012 R2. I opened the Server Manager...
View ArticleFIO (Flexible I/O) – a benchmark tool for any operating system
I have just attended an interesting session held by Martin Nash (@mpnsh) at UKOUG 14 – Liverpool: “The least an Oracle DBA Should Know about Linux Administration” . During this session I had the...
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Don’t forget to configure Power Management settings on Hyper-V
Recently I had the opportunity to audit a SQL Server database hosted on a Hyper-V 2012 cluster. I noticed that the guest operating system had the Power Plan configured to High performance. This is...
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SQL Server 2014: FCIs, availability groups, and TCP port conflict issues
After giving my session about SQL Server AlwaysOn and availability groups at the last French event “Les journées SQL Server 2014”, I had several questions concerning the port conflict issues,...
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IOUG Collaborate #C15LV
The IOUG – Independant Oracle User Group – has a great event each year: the COLLABORATE. This year it’s in April 12-16, 2015 at The Mandalay Bay Resort & Casino in Las Vegas. I’ll be a speaker and...
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Windows Cluster vNext and cloud witness
The next version of Windows will provide some interesting features about WFSC architectures. One of them is the new quorum type: “Node majority and cloud witness” which will solve many cases where a...
View ArticleRAC Attack! was another great success at C15LV
The RAC Attack – install a RAC in your own laptop – is a great success at Las Vegas. The idea is to help people follow the RAC Attack cookbook which is available at:...
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Using Windows 2012 R2 & dynamic witness feature with minimal configurations –...
I wrote a blog post some time ago about using a file share witness with a minimal windows failover cluster configuration that consists of two cluster nodes. In this blog post, I told I was reluctant...
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Windows 10 – I tried and came back
I’ve tried Windows 10 one month ago, and I had to roll back because VirtualBox failed to create host-only interfaces. Today, it forced me to upgrade again, so I tried a little further… and finally...
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Linux Serververwaltung mit Puppet leichtgemacht
Mit Puppet die Linux-Server verwalten Sind mehrere Linux-Server vorhanden, dann entsteht sofort ein Aufwand die unzähligen Konfigurationen ( ntp, chrony, dns, users, groups, services etc.) zu...
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Control-M Application Integrator verwaltet Microsoft PowerShell Code &...
Welche Vorteile hat “Control-M Application Integrator”? Bei einem Kunden, der Control-M im Einsatz hat, habe ich auf einem Windows Server ganz viele Windows und PowerShell Scripts angetroffen. Unter...
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Mail mit Format und Priorität aus Linux
Ausgangslage Ein Kunde hat mit kürzlich danach gefragt, wie ich den Output eines Scripts auf einer Linuxplattform per Mail sauber formatiert versenden kann. Als Beispiel nehmen wir folgedes:...
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Windows Server 2016: Containers
One of the new feature which will come with Windows Server 2016 is the Containers. Microsoft made available its fourth technical preview of his Windows Server 2016 platform some days ago. This new...
View ArticleLinux – How to check the exit status of several piped commands
As piping in bash commands is common and very usefull, controling the exit status of each piped commands in bash scripting can be vital, especially for backups. I was checking by a customer the backups...
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Windows failover cluster 2016 : new site awareness feature
After my first two blogs about cloud witness and domain-less dependencies features shipped with Windows Server 2016, it’s time to talk about another pretty cool feature of the WSFC : site awareness...
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Getting started with Ansible – Preparations
When your infrastructure landscape becomes larger and larger you definitely need a tool which helps you in managing your servers, no matter if pḧysical or virtual, running in the cloud or not. One tool...
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Windows Server 2016: Introducing Storage Spaces Direct
Have you heard about Storage Spaces introduced by Windows Server 2012? Well, this is a very interesting storage feature that allows us to deal with functionalities like storage virtualization, RAID...
View ArticleStay tuned with kernel parameters
Why does the sysctl.conf value for swappiness on Oracle Linux 7.x not survive a reboot For a project I applied the dbi services best practices for Oracle databases. One of these is to adjust the...
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VM Linux – Device not found : Network unreachable
Recently I exported an Oracle Virtual Box VM as an “.ova” file. When the file was imported again I faced issues with the network devices inside the VM. This post is about what I experienced and how I...
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