声明：本文乃“运维家”原创，转载请注明出处，更多内容请关注公众号“运维家”。
主旨
oracle作为主流数据库之一，身为IT人员，怎么能不会搭建呢？我不允许哈，下来看看如何一步一步的搭建起来吧。建议收藏，不然一会儿就找不见了，哈哈哈。
环境
linux环境oracle软件根目录下磁盘空间最少4G
软件下载
官网下载太慢，而且需要注册，这里直接从公众号 “运维家” 后台回复 “oracle” 即可获取软件包，即取即用。准备
# 关闭防火墙[yunweijia@localhost ~]$ sudo systemctl stop firewalld.service[yunweijia@localhost ~]$ sudo systemctl disable firewalld.service# 关闭selinux[yunweijia@localhost ~]$ sudo getenforce 0Disabled[yunweijia@localhost ~]$ sudo vim /etc/selinux/configSELINUX=disabled[yunweijia@localhost ~]$
上传文件
我们从上面提供的地址，下载完文件之后，上传到服务器上；[yunweijia@localhost ~]$ mkdir -pv oracle/RJmkdir: 已创建目录 "oracle"mkdir: 已创建目录 "oracle/RJ"[yunweijia@localhost RJ]$ pwd/home/yunweijia/oracle/RJ[yunweijia@localhost RJ]$ lsoracle19.zip[yunweijia@localhost RJ]$ unzip oracle19.zipArchive: oracle19.zipcreating: 19cc/inflating: 19cc/base.zipinflating: 19cc/krb5-1.15.1-50.el7.src.rpminflating: 19cc/oracle-database-ee-19c-1.0-1.x86_64.rpminflating: 19cc/oracle-database-preinstall-19c-1.0-1.el7.x86_64.rpm[yunweijia@localhost RJ]$ mv 19cc/* .[yunweijia@localhost RJ]$ rm -rf 19cc oracle19.zip[yunweijia@localhost RJ]$ unzip base.zip[yunweijia@localhost RJ]$ rm -f base.zip[yunweijia@localhost RJ]$ lsbase krb5-1.15.1-50.el7.src.rpm oracle-database-ee-19c-1.0-1.x86_64.rpm oracle-database-preinstall-19c-1.0-1.el7.x86_64.rpm[yunweijia@localhost RJ]$
创建离线yum源
[yunweijia@localhost ~]$ cd /etc/yum.repos.d/[yunweijia@localhost yum.repos.d]$ sudo mkdir bf[yunweijia@localhost yum.repos.d]$ sudo mv *.repo bf/[yunweijia@localhost yum.repos.d]$ sudo vim local.repo[local]name=localenable=1baseurl=file:///home/yunweijia/oracle/RJ/basegpgcheck=0[yunweijia@localhost yum.repos.d]$ yum clean all已加载插件：fastestmirror, langpacks正在清理软件源：localCleaning up everythingMaybe you want: rm -rf /var/tmp/yum-yunweijia-lZ5kh0, to also free up space taken by orphaned data from disabled or removed repos[yunweijia@localhost yum.repos.d]$
安装oracle
出现如下图，安装完成；[yunweijia@localhost RJ]$ pwd/home/yunweijia/oracle/RJ[yunweijia@localhost RJ]$[yunweijia@localhost RJ]$ sudo yum -y localinstall oracle-database-preinstall-19c-1.0-1.el7.x86_64.rpm[yunweijia@localhost RJ]$ sudo yum -y localinstall oracle-database-ee-19c-1.0-1.x86_64.rpm[yunweijia@localhost RJ]$
初始化
[yunweijia@localhost RJ]$ sudo /etc/init.d/oracledb_ORCLCDB-19c configure
环境变量
[yunweijia@localhost RJ]$ sudo su - oracle[oracle@localhost ~]$ vim .bash_profile# 在文件末尾添加以下3行export ORACLE_HOME=/opt/oracle/product/19c/dbhome_1export PATH=$PATH:/opt/oracle/product/19c/dbhome_1/binexport ORACLE_SID=ORCLCDB[oracle@localhost ~]$[oracle@localhost ~]$ source .bash_profile[oracle@localhost ~]$
登录
使用客户端工具navicat连接，操作如下：[]$ sqlplus / as sysdbaSQL> alter user system identified by 123456;SQL> exit[]$
此文结束，下一篇将介绍oracle的重启、新建用户、数据库、基本命令等操作。欢迎各位老板关注。
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