Database - RAC/Scalability (MOSC)

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Disable Intel CPU Hyper threading in Oracle RAC environment

edited Oct 18, 2013 12:19AM in Database - RAC/Scalability (MOSC) 3 commentsAnswered

Hi All,

Does disable CPU hyper threading will has direct impact or maybe unexpected behavior to Oracle RAC database?

Actually the background of this question is we have many received packet queuing on the network layer waiting to be processed. Investigation leads to the processor utilization which shows that many processor are still in idle state or not used when the other processors are busy processing incoming request.

I have visited some oracle note like 

CPU Count Consideration for Oracle Parameter Setting When Using Hyper-Threading Technology (Doc ID 289870.1)

Oracle and Hyper-Threading (Doc ID 205089.1)

Using PROCESSOR_GROUP_NAME to bind a database instance to CPUs or NUMA nodes (

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