A public transport company in a city called Galactic City, needs to replace its aging city buses with new ones. It asks three bus vendors what they have to offer and if they can do a live test to see…
Getting the most out of your server resources
As an advocate on database virtualization, I often challenge customers to consider if they are using their resources in an optimal way. And so I usually claim, often in front of a skeptical audience, that physically deployed servers hardly ever…
Linux Disk Alignment Reloaded
My all-time high post with the most pageviews is the one on Linux disk alignment: How to set disk alignment in Linux. In that post I showed an easy method on how to set and check disk alignment under linux.
ZFS and Database fragmentation
Yet another customer was asking me for advice on implementing the ZFS file system on EMC storage systems. Recently I did some hands-on testing with ZFS as Oracle database file store so that I could get an opinion on the…
Managing REDO log performance
I have written before about managing database performance issues, and the topic is hot and alive as ever. Even with today’s fast processors, huge memory sizes and enormous bandwidth to storage and networks. warning: Rated TG (Technical Guidance required) for…