net.core.rmem_default=262144
net.core.rmem_max=262144
net.core.wmem_default=262144
net.core.wmem_max=262144
"/etc/sysctl.conf" 47L, 1280C written
[root@ora10g /]# /sbin/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
net.ipv4.tcp_syncookies = 1
kernel.msgmnb = 65536
kernel.msgmax = 65536
kernel.shmmax = 4294967295
kernel.shmall = 268435456
kernel.shmall = 2097152
kernel.shmmax = 2147483648
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
5、 修改安全限制参数
这两个参数是对linux用户可以使用的进程数和打开的文件数的设置限制
|'GITPUB个人空间MFyl L$k7KL
oxf%O l2UUsoft是软限制：用户可以超过这个设置的值，但一定不能超过hard的值。
hard是硬限制：一般soft比hard小。
如果用LV管理的话，还需要加上如下两行：
m^$P$D+yf^t/J,Y20674423M$K
c2C&[^doracle,db2,sqlserver,sybase,mysql,erp,scm,sap,java,.netoracle soft memlock 3145728
L.b sqZ20674423x2e_
--------------------------------------------------------------------------------
hB_)sloracle hard memlock 3145728oracle,db2,sqlserver,sybase,mysql,erp,scm,sap,java,.net:}3y,Y6]-X0LY
[root@ora10g /]# vi /etc/security/limits.conf
oracle soft nproc 2047 --
oracle hard nproc 16384 --单用户可打开的最大进程数为16384个
oracle soft nofile 1024 --
oracle hard nofile 65536 --可打开最大文件个数65536
"/etc/security/limits.conf" 56L, 1903C written
7、配置相关的限制
[root@ora10g /]# vi/etc/pam.d/login
session required/lib/security/pam_limits.so ---设置可插入认证模块（PAM）限制
session required pam_limits.so ---为oracle设置Shell限制
"/etc/pam.d/login" 18L, 722C written
8、添加如下系统环境变量
[root@ora10g /]# vi /etc/profile
# /etc/profile
if [ $USER = "oracle" ]; then
if [ $SHELL = "/bin/ksh" ]; then
ulimit -p 1638
ulimit -n 65536
else
ulimit -u 16384 -n 65536
fi
fi
"/etc/profile" 68L, 1205C written