error: unknown error 22 setting key 'kernel.shmmax'

/etc/sysctl.conf 設定注釋，發現報錯 。

error: unknown error 22 setting key 'kernel.shmmax'

# Added by DBA for Oracle DB
kernel.shmall = 2097152
kernel.shmmax = 2147483648 # Half the size of physical memory (in bytes)
kernel.shmmni = 4096
kernel.sem = 250 32000 100 128
fs.file-max = 65536
net.ipv4.ip_local_port_range = 1024 65000
net.core.rmem_default = 262144
net.core.rmem_max = 262144
net.core.wmem_default = 262144
net.core.wmem_max = 262144

[root@gnd-rac02 etc]#
[root@gnd-rac02 etc]# sysctl -p
net.ipv4.ip_forward = 0
net.ipv4.conf.default.rp_filter = 1
net.ipv4.conf.default.accept_source_route = 0
kernel.sysrq = 0
kernel.core_uses_pid = 1
kernel.shmall = 2097152
error: unknown error 22 setting key 'kernel.shmmax'
kernel.shmmni = 4096
kernel.sem = 250 32000 100 128
fs.file-max = 65536
net.ipv4.ip_local_port_range = 1024 65000
net.core.rmem_default = 262144
net.core.rmem_max = 262144
net.core.wmem_default = 262144
net.core.wmem_max = 262144
[root@gnd-rac02 etc]#

刪除掉 # Half the size of physical memory (in bytes)

之後 # sysctl -p 噝姓?Ａ