Tag: Technical Blog

I recently blogged about Playing with ASM Online Migration and still soul searching from not having jumped on the ASM band wagon. How can online storage migration be performed before ASM came about? One option is using Logical Volume Manager…

Introduction When we relate file share and databases, many people will turn up their noses – but today this is a reality that we can use even in production. Microsoft spent the last years working on improvements to the Server…

Section A (Theory) One of the typical reasons for performance issues is runaway queries executed by end users on a busy production database. This problem is fairly common in OLAP or shared systems (OLTP/OLAP) where business users begin executing complex…

DBAs working in a managed services environment often run into situations where some customers are still running JRE6 while others have upgraded to latest JRE7. When JRE7 is installed on a Windows desktop, it becomes the default JRE and gets…

This is part 3 of a multipart series of getting oracle RAC running on a cloud environment. In part 1, we set up a NFS server for shared storage. In part 2, we set up OS components for each RAC server. Now we finish up the OS configuration and move to Oracle grid infrastructure.

In part 1 of this series, we talked about some of the challenges of setting up Oracle RAC on a public cloud provider, and went on to order some VMs from provider Gandi, and finally configuring a NFS server for shared storage. In this post, we move on to configuring the rac servers themselves, rac01 and rac02.

I’ve been working on moving a lot of the testing and R&D work I do away from local virtual machines and onto cloud environments, for a few reasons: I can avoid carrying around a laptop all the time, and rather…

I’ve always wanted to get my hands on SSAS, SSIS and SSRS as I’ve often felt shorthanded in these areas. Yesterday I decided to play around with one of these and get my hands dirty – SSAS. A few months…

This is yet another blog post with tips and tricks to help you (and me) download Oracle software without the help of a Web browser. If you Google “how to download Oracle with wget” you’ll find heaps of posts with…

Recently, I’ve been playing with the workflow managers of the Hadoop world. Namely, Azkaban and Oozie. While Azkaban offers a cute graph-oriented display of your running workflows, it is a little bit limited in the workflow logic department. No conditional…