Chapter 13: Optimizing Linux for Oracle Databases
Companies are migrating away from large IBM, HP, or Sun hardware to commodity hardware running Linux. With the readily available 18-core Intel chips at affordable prices, companies can run massive Linux compute nodes at a fraction of the cost of enterprise UNIX servers on IBM, HP, and Sun. Linux is proven to have rock-solid OSs that provide extreme reliability similar to its counterpart UNIX OSs such as IBM AIX, HP/UX, and Sun Solaris. With proper optimizations, Linux can scale like its counterparts and run Oracle databases even faster. Think about a single compute node on an Exadata X5-2 configuration. It comes with 36 CPU cores and up to 768GB of physical memory. If you run a 2-node RAC for a Quarter Rack, you can harness 72 cores of processing power and approximately 1.5TB of memory.