- os
 1. Application Serve 설치시 커널 파라미터 권고안 (Oracle 기준)

  maxdsize : 67MByte * (Message store(GB) / 4)

  maxswapchunks : > swap space(MB)/2

  maxuprc : > 256 * 보조 process 개수  

  nproc : #LOG * 2 + 10

  ncallout : >= nproc

  nfile : #LOG * 45

  maxfiles : > 256

  ninode : #ACT * 45

  nflocks : #ACT * 1

  msgssz : 32

  msgtql : #ACT + 30

  msgmap : msgtql + 2

  msgmnb : 65535

  semmnu(Number of Semaphore Undo Structures) : = nproc

  shmmni : default + 15

  maxusers : > #TOT

  shmmax(Max Shared Mem Segment) : > 167772160

 maxssiz(Max Stack Segment Size) : > 16777216

** 일반적인 kernel parameter setting

  maxdsiz           o x 1 0 0 0 0 0 0 0 (268,435,456)

  maxdsiz_64bit     o x 0 0 0 0 0 0 3 f f b f f f f f f f (4,396,970,769,279)

  maxssiz_64bit     o x 0 0 8 0 0 0 0 0 (8,388,608)

  maxtsiz_64bit     o x 0 4 0 0 0 0 0 0 (67,108,864)

  shmmax            o x 2 0 0 0 0 0 0 0 (536,870,912)