It covers the following types of hardware systems and
how Oracle takes advantage of the features inherent in each of the platforms:
??? Uniprocessors (including multicores)
??? Symmetric Multiprocessing (SMP) systems
??? Clusters
??? Non-Uniform Memory Access (NUMA) systems
??? Grid computing
We??™ll also discuss the use of different disk technologies and how to choose the hardware
system that??™s most appropriate for your purposes.
System Basics
Any discussion of hardware systems begins with a review of the components that
make up a hardware platform and the impact these components have on the overall
system. You??™ll find the same essential components under the covers of any computer
system:
System Basics | 291
??? One or more CPUs, which execute the basic instructions that make up computer
programs, possibly with multiple cores to provide added processing power
??? Memory, storing recently accessed instructions and data
??? An input/output (I/O) system, that typically consists of some combination of
disk storage, device controllers for pulling data and programs off physical media,
and network controllers for connecting the system to other systems on the
network
The number of each of these components and the capabilities of the individual components
themselves determine the ultimate cost and scalability of a system.
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