创建 Oracle 组和用户帐户
/usr/sbin/groupadd oinstall
/usr/sbin/groupadd dba
/usr/sbin/useradd -m -g oinstall -G dba oracle
id oracle
设置 oracle 帐户的口令：
passwd oracle
=====================================
创建安装目录
mkdir -p /opt/app/oracle/10g
mkdir -p /opt/app/oracle/oradata
chown -R oracle:oinstall /opt/app/oracle/oradata
chmod -R 775 /opt/app/oracle/oradata
=====================================
配置 Linux 内核参数
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
如果您按照以上说明安装了 Linux，且内核参数全部采用默认值，则只需在以 root 用户身份登录后执行下命令。
cat >> /etc/sysctl.conf <<EOF
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
EOF
/sbin/sysctl -p
例如：
# cat >> /etc/sysctl.conf <<EOF
> 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
> EOF