簡單說明：

官檔地址：https://docs.oracle.com/cd/E11882_01/install.112/e24326/toc.htm
檢視 Configuring Kernel Parameters 章節部分
參考文件《CentOS5u11 Oracle 10g 安裝部署的核心引數設定簡析》
已經在上一篇部落格中解釋了所有官檔要求的引數的功能
本篇博文只是根據CentOS6u9對11g的這些引數的要求的配置操作記錄

官檔引數要求：

fs.aio-max-nr = 1048576
fs.file-max = 6815744
kernel.shmall = 2097152
kernel.shmmax
 
 = 536870912
kernel.shmmni = 4096
kernel.sem = 250 32000 100 128
net.ipv4.ip_local_port_range = 9000 65500
net.core.rmem_default = 262144
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max = 1048576

系統預設：

fs.aio-max-nr = 65536
fs.file-max = 193094
kernel.shmall = 4294967296
kernel.shmmax
 
 = 68719476736
kernel.shmmni = 4096
kernel.sem = 250        32000   32      128
net.ipv4.ip_local_port_range = 32768    60999
net.core.rmem_default = 124928
net.core.rmem_max = 124928
net.core.wmem_default = 124928
net.core.wmem_max = 124928

配置命令：

echo 'fs.aio-max-nr = 3145728'>>/etc/sysctl.conf
echo
 
 'fs.file-max = 6815744'>>/etc/sysctl.conf
# 如果實體記憶體大於64G，則開啟使用
# echo 'kernel.shmmax = 137438953472'>>/etc/sysctl.conf
echo 'kernel.shmmni = 4096'>>/etc/sysctl.conf
echo 'kernel.sem = 250 32000 100 128'>>/etc/sysctl.conf
echo 'net.ipv4.ip_local_port_range = 9000 65000'>>/etc/sysctl.conf
echo 'net.core.rmem_default = 262144'>>/etc/sysctl.conf
echo 'net.core.rmem_max = 4194304'>>/etc/sysctl.conf
echo 'net.core.wmem_default = 262144'>>/etc/sysctl.conf
echo 'net.core.wmem_max = 1048576'>>/etc/sysctl.conf
sysctl -p