Multicore processor licensing

If another VM or another 2 VMs are needed, then the entire server must be licensed again! That is, another 16 licenses. So those 16 licenses could very well turn into 20 licenses, or 24 licenses, or more! So, clearly, Microsoft has made Datacenter Edition the only practical choice for heavily virtualized environments. And, yesterday, general availability for Windows Server and System Center was announced for the October timeframe.

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This is more to the trend of denser servers — that is, with more and more cores per server — and, possibly, in a nod to Azure. A minimum of 8 core licenses is required for each physical processor. Wednesday, May 21, Oracle licensing on multicore processor. With the increasing popularity of multi-core processor nowadays, it's unclear for a lot of people including DBAs how Oracle calculate the required license for certain server configuration.

A quick guideline is, for one server one core has processor licensing factor of. However there's a catch here, this equation is not apply to more than one multicore servers, for example RAC setup.

Therefore instead of 4 processor licenses this require 6 processor licenses. Also note, When licensing Oracle programs with Standard Edition One or Standard Edition in the product name, a processor is counted equivalent to an occupied socket; however, in the case of multi-chip modules, each chip in the multi-chip module is counted as one occupied socket.

Please refer to following licensing document from Oracle for more detail.