修改
SELINUX=disabled
sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config
cat /etc/selinux/config | grep SELINUX
getenforce
setenforce 0
getenforce
2.3 关闭防火墙(非必须)
systemctl stop firewalld
systemctl disable firewalld
systemctl status firewalld
3、初始化 Oracle 安装
3.1 创建 oracle 用户
groupadd oinstall
groupadd dba
useradd -g oinstall -G dba oracle
passwd oracle
验证 oracle
id oracle
uid=1001(oracle) gid=1001(oinstall) groups=1001(oinstall),1002(dba)
3.2 配置内核参数
vim /etc/sysctl.conf
添加如下内容到 sysctl.conf
# use for oracle11gR2
kernel.shmmax = 2147483648
kernel.shmall = 268435456
kernel.shmmni = 4096
kernel.sem = 250 32000 100 128
net.ipv4.ip_local_port_range = 9000 65500
# 1024 65000
net.core.rmem_default = 4194304
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max = 1048576
# 262144
fs.aio-max-nr = 1048576
fs.file-max = 6815744
#tuxedo
kernel.msgmni = 4096
kernel.msgmax = 65536
kernel.msgmnb = 84000
# 实时生效
sysctl -p
3.3 修改用户权限
vim /etc/security/limits.conf
添加如下内容到 limits.conf
# oracle11gR2
oracle soft nproc 2047
oracle hard nproc 16384
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