Memory and 11gr2 and Linux

For large SGA sizes, HugePages can give substantial benefits in virtual memory management. Without HugePages, the memory of the SGA is divided into 4K pages, which have to be managed by the Linux kernel. Using HugePages, the page size can be increased to any value between 2MB and 256MB, thereby reducing the total number of […]

Hugepages, Memory and Oracle

Configuring Hugepages For Oracle on Linux Huge Pages Article NOTE: I have recently discovered that Oracle, hugepages, and NUMA are incompatible, at least on Linux. NUMA must be disabled to use hugepages with Oracle. RAM is managed in 4k pages in 64-bit Linux. When memory sizes were limited, and systems with more than 16G RAM […]