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Parameter Recommended Formula or Value
nproc 4096
ksi_alloc_max (nproc*8)
max_thread_proc 1024
maxdsiz 1073741824 (1 GB)
maxdsiz_64bit 2147483648 (2 GB)
maxssiz 134217728 (128 MB)
maxssiz_64bit 1073741824 (1 GB)
maxswapchunks or swchunk (not used >= HP-UX 11iv2) 16384
maxuprc ((nproc*9)/10)
msgmap (msgmni+2)
msgmni nproc
msgseg (nproc*4); at least 32767
msgtql nproc
ncsize (ninode+vx_ncsize); for >=HP-UX 11.23 use (ninode+1024)
nfile (15*nproc+2048); for Oracle installations with a high number of data files this might not be enough, then use (number od Oracle processes)*(number of Oracle data files) + 2048
nflocks nproc
ninode (8*nproc+2048)
nkthread (((nproc*7)/4)+16)
semmap (semmni+2)
semmni (nproc*2)
semmns (semmni*2)
semmnu (nproc-4)
semvmx 32767
shmmax The size of physical memory 1073741824, whichever is greater. Note: To avoid performance degradation, the value should be greater than or equal to the size of the SGA.
shmmni 512
shmseg 120
swchunk 4096 (up to 65536 for large RAM)
vps_ceiling 64 (up to 16384 = 16MB for large SGA) |
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