다음의 글이 도움이 될 듯 싶다. Kernel hugepages does not alter the calculation of SHMMAX, which you need to set large enough to fit your largest Oracle SGA. SHMMAX applies to SYS V shared memory, which can be hugepages or use conventional 4K memory pages. SHMMAX is not relevant when you use /dev/shm POSIX shared memory (Oracle AMM). The Oracle database requires shared memory for the SGA. This can be Sys V (IPC) or POSIX /dev/shm. Shared memory and semaphores, […]