The Oracle RAC Dilemma – Part III

The Oracle RAC Dilemma – Part III

Dave Welch (@OraVBCA), Chief Evangelist Part III: The HA Feat RAC Will Never Pull Off Real Application Clusters had always been the high availability king. It surprises me that after 15 years since the ground-breaking VMware Fault Tolerance was introduced, I encounter...
The Oracle RAC Dilemma – Part II

The Oracle RAC Dilemma – Part II

Dave Welch (@OraVBCA), Chief Evangelist Part II: Four Operational Best Practices In this post, we discuss four RAC operational best practices for shops that have either strategically selected RAC or have been compelled to adopt it. RAC operational best practices...
The Oracle RAC Dilemma – Part I

The Oracle RAC Dilemma – Part I

Dave Welch (@OraVBCA), Chief Evangelist Part I: Four Criteria for Introducing or Keeping RAC VMware vSphere High Availability can provide significant levels of high availability for many workloads. VMware HA does so without the complexity, fragility, or cost of Oracle...
ESXi and Memory Overhead

ESXi and Memory Overhead

by Cameron Cameron, Senior Consultant Note: It is assumed that the audience for this document already understands how VMware manages memory for all of the VMs running on each ESXi host. One of the great advantages of VMware is the ability to oversubscribe CPU and...

Oracle RAC on VMware – Beware Oversubscription

by Cameron Cameron, Senior Consultant At House of Brick, we’ve been virtualizing Oracle RAC on VMware for over twelve years. The technology is reliable. Of course, prerequisites and best practices exist in a virtual deployment, just like they do with physical...