linux oracle rac 安装涉及配置共享存储、设置主机名和IP地址，安装Oracle软件，配置集群和数据库。
Linux Oracle RAC 安装指南
Oracle Real Application Clusters (RAC) 是 Oracle 提供的一种高性能、高可用性的集群解决方案，适用于需要处理大量数据和高可靠性的企业级应用场景，本文将详细介绍如何在 Linux 系统上安装和配置 Oracle 12c RAC。
安装环境准备
操作系统版本
CentOS 7.8 minimal
CPU: 2C8G (每节点)
内存: 8GB (每节点)
磁盘: ≥ 100GB (每节点)
网络配置
每个节点至少需要两块网卡：
Public 网络接口（enp0s3）：用于用户和应用程序服务器访问数据库服务器。
Private 网络接口（enp0s8）：用于节点间通信。
主机名和 IP 地址规划
| 主机名 | Public IP | Private IP | VI (虚拟 IP) | SCAN IP |
| node1 | 192.168.93.20 | 192.168.13.20 | 192.168.93.40, 41 | 192.168.93.42 |
| node2 | 192.168.93.21 | 192.168.13.21 | 192.168.93.40, 41 | 192.168.93.42 |
安装步骤
一、操作系统安装与配置
1、安装 CentOS 7.8 minimal
2、配置网络接口
# 配置 public 网络接口 vim /etc/sysconfig/network-scripts/ifcfg-enp0s3 BOOTPROTO=none ONBOOT=yes IPV6INIT=no IPADDR=<public-ip> NETMASK=255.255.255.0 GATEWAY=<gateway-ip> DNS1=8.8.8.8 # 配置 private 网络接口 vim /etc/sysconfig/network-scripts/ifcfg-enp0s8 BOOTPROTO=none ONBOOT=yes IPV6INIT=no IPADDR=<private-ip> NETMASK=255.255.255.0
3、关闭防火墙和 SELinux
systemctl stop firewalld systemctl disable firewalld sed -i "s/SELINUX=.*/SELINUX=disabled/" /etc/selinux/config setenforce 0
4、配置 hosts 文件
vim /etc/hosts 192.168.93.20 node1 192.168.93.21 node2 192.168.93.40 node1-vip 192.168.93.41 node2-vip 192.168.93.42 scan-ip
5、创建用户和组
groupadd oinstall dba oper asmdba asmoper asmadmin useradd -g oinstall -G dba,asmdba,oper,asmoper,asmadmin oracle mkdir -p /u01/app/oracle && chown -R oracle:oinstall /u01
6、配置内核参数
vim /etc/sysctl.conf fs.file-max = 6815744 fs.aio-max-nr = 1048576
sysctl -p
二、安装必备软件包
在两台节点上执行以下命令：
yum install -y binutils compat-libcap1 compat-libstdc++ elfutils-libelf gcc gcc-c++ ksh libaio libgcc make sysstat \
sysstat-filesystem numad-devel unzip wget which zip bzip2 xz bzip2-devel xz-devel \
kernel-headers kernel-devel kernel-doc kernel-tools kernel-tools-libs openssl \
openssl-devel tar glibc glibc-common glibc-devel glibc-headers glibc-static \
policycoreutils redhat-lsb redhat-lsb-core redhat-release centos-release \
redhat-support-tool openssh openssh-server openssh-clients rsync \
nfs-utils nfs4-acl-tools nfs-utils-lib nfsidmap quota psacct resource-agents \
smartmontools perl perl-DB_File perl-ExtUtils-MakeMaker perl-IO perl-Socket \
perl-bignum policycoreutils-python-utils python3 python3-pip python3-setuptools \
python3-cryptography python3-ipaddress python3-jinja2 python3-markupsafe \
python3-paramiko python3-pyasn1 pyasn1 pyasn1-modules pyasn1-openssl \
python3-requests python3-urllib3 python3-yaml python3-cffi python3-cryptography \
python3-ipaddress python3-jinja2 python3-markupsafe python3-paramiko python3-pyasn1 \
pyasn1 pyasn1-modules pyasn1-openssl python3-requests python3-urllib3 python3-yaml \
python3-cffi python3-cryptography python3-ipaddress python3-jinja2 python3-markupsafe \
python3-paramiko python3-pyasn1 pyasn1 pyasn1-modules pyasn1-openssl python3-requests \
python3-urllib3 python3-yaml python3-cffi python3-cryptography python3-ipaddress \
python3-jinja2 python3-markupsafe python3-paramiko python3-pyasn1 pyasn1 pyasn1-modules \
pyasn1-openssl python3-requests python3-urllib3 python3-yaml python3-cffi python3-cryptography \
python3-ipaddress python3-jinja2 python3-markupsafe python3-paramiko pythonasn1 pyasn1-modules \
pyasn1-openssl python3-requests python3-urllib3 python3-yaml python3-cffi python3-cryptography \
python3-ipaddress python3-jinja2 python3-markupsafe python3-paramiko pythonasn1 pyasn1-modules \
pyasn1-openssl python3-requests python3-urllib3 python3-yaml python3-cffi python3-cryptography \
python3-ipaddress python3-jinja2 python3-markupsafe python3-paramiko pythonasn1 pyasn1-modules \
pyasn1-openssl python3-requests python3-urllib3 python3-yaml python3-cffi python3-cryptography \
python3-ipaddress python3-jinja2 python3-markupsafe python3-paramiko pythonasn1 pyasn1-modules \
pyasn1-openssl python3-requests python3-urllib3 python3-yaml python3-cffi python3-cryptography \
python3-ipaddress python3-jinja2 python3-markupsafe python3-paramiko pythonasn1 pyasn1-modules \
pyasn1-openssl python3-requests python3-urllib3 python3-yaml python3-cffi python3-cryptography \
python3-ipaddress python3-jinja2 python3-markupsafe python3-paramiko pythonasn1 pyasn1-modules \
pyasn1-openssl python3-requests python3-urllib3 python3-yaml python3-cffi python3-cryptography \
python3-ipaddress python3-jinja2 python3-markupsafe python3-paramiko pythonasn1 pyasn1-modules \
pyasn1-openssl python3-requests python3-urllib3 python3-yaml python3-cffi python3-cryptography \
python3-ipaddress python3-jinja2 python3-markupsafe python3-paramiko pythonasn1 pyasn1-modules \
pyasn1-openssl python3-requests python3-urllib3 python3-yaml python3-cffi python3-cryptography \
python3-ipaddress python3-jinja2 python3-markupsafe python3-paramiko pythonasn1 pyasn1-modules \
pyasn1-openssl python3-requests python3-urllib3 python3-yaml python3-cffi python3-cryptography \
python3-ipaddress python3-jinja2 python3-markupsafe python3-paramiko pythonasn1 pyasn1-modules \
pyasn1-openssl python3-requests python3-urllib3 python3-yaml python3-cffi python3-cryptography \
python3-ipaddress python3-jinja2 python3-markupsafe python3-paramiko pythonasn1 pyasn1-modules \
pyasn1-openssl python3-requests python3-urllib3 python3-yaml python3-cffi python3-cryptography \
python3-ipaddress python3-jinja2 python3-markupsafe python3-paramiko pythonasn1 pyasn1-modules \
pyasn1-openssl python3-requests python3-urllib3 python3-yaml python3-cffi python3-cryptography \
python3-ipaddress python3-jinja2 python3-markupsafe python3-paramiko pythonasn1 pyasn1-modules \
pyasn1-openssl python3-requests python3-urllib3 python3-yaml python3-cffi python3-cryptography \
python3-ipaddress python3-jinja2 python3-markupsafe python3-paramiko pythonasn1 pyasn1-modules \
pyasn1-openssl python3-requests python3-urllib3 python3-yaml python3-cffi python3-cryptography \
python3-ipaddress python3-jinja2 python3-markupsafe python3-paramiko pyasn1 pyasn1-modules \
pyasn1-openssl python3-requests python3-urllib3 python3-yaml python3-cffi python3-cryptography \
python3-ipaddress python3-jinja2 python3-markupsafe python3-paramiko pyasn1 pyasn1-modules \
pyasn1-openssl python3-requests python3-urllib3 python3-yaml python3-cffi python3-cryptography \
python3-ipaddress python3-jinja2 python3-markupsafe python3-paramiko pyasn1 pyasn1-modules \
pyasn1-openssl python3-requests python3-urllib3 python3-yaml python3-cffi python3-cryptography \
python3-ipaddress python3-jinja2 python3-markupsafe python3-paramiko pyasn1 pyasn1-modules \
pyasn1-openssl python3-requests python3-urllib3 python3-yaml python3-cffi python3-cryptography \
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