It's quite interesting to know how to disable and enable CPU core in Linux in different scenario.
Thought came from Exadata architecture as Exadata 1/8th Rack comes with 16 cores but only half of the CPUs will be enabled on the DB server, that's why we have to pay Oracle licence cost for half core only.
This enabling and disabling can be controlled by resource control utility which comes with Exadata, so what we can do to enable or disable cpu core in non Exadata server?
We have performed this test on test server which has four CPU cores.
Step 1: Check Total Available CPU
There are multiple method to check it, we have checked it with TOP utility which give you better understanding. It shows 4 cpu cores are available.
