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Understanding cores to vcpus in ODA X5-2

Little Foot-OracleMar 16 2016 — edited Mar 22 2017

Hi All,

I am trying to understand the relationship between cores and  vcpus in the ODA box.

As per the data sheet, ODA X5-2 has 18 cores per server (18 Cores/Processor)

we can get these details "oakcli show processor" , so 18+18 Cores in a ODA.

Now for the vCPUs, "oakcli show cpupool -node " shows 72 vCPUs per server,

so, if my understanding is correct 18 Cores/Processors = 72 vCPUs/node , i.e 1 Core=4 vCPU .

I have an understanding that 1 intel core equal to 2 vCPUs or 2 hyper threads, please correct me if i am wrong.

Now does each vcpu has multi threading ?

As per my understanding minimum number of cores required per VM is 2 (even number of cores to selected),

does this means 2 vcpus in the cpupool ?

oak configurator tool requires to provide the db template, based on the size of the database or the no of cores. Here are the number of cores referrenced are vcpus (x of 72vcpus)???

For creating the database, if i need to have database with 8 + 8 Cores, then which template do i need to select during the oda configuration ?

I do not see any template for 8,10 cores (4,6,12 available) , assuming my db is small can we go with 6core template and then increase the db cores to 8 ? or go with 12core and then reduce the number of cores ?

will there be any effects of resizing the oda-base with no of cores ?

or is it mandatory to have cores based on database templates ?

how do i check if ODA is created as per the licensed cores ?

do i need to check the enabled cores in "oakcli show processor" ? or is the number of vcpus in the cpupool ? or number of cpus in the ODA base ?

please help me to understand.

Thanks and Regards,

Littlefoot

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Added on Mar 16 2016
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