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注意：将安装文件解压到Oracle Home下，这里和Oracle 18c之前的版本不同，之前的版本解压的安装文件可以在任何位置，Oracle 解压的安装文件必须在Oracle Home下。因为仅从Oracle home运行runInstaller命令。不要从任何其他位置运行runInstaller。

最好是拷贝到ORACLE_HOME下面后进行一次授权

chomd -R 755 /u01/

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开启安装界面

我们选择安装软件吧，等会搭建DG

base路径

权限看是不是对的，自己根据情况配置

等待安装

swap 勾选忽略，几点swap也会出现对应的错误信息，以及解决方法

用root执行对应的脚本

[root@oracle18c ~]# sh /u01/app/oraInventory/orainstRoot.sh
Changing permissions of /u01/app/oraInventory.
Adding read,write permissions for group.
Removing read,write,execute permissions for world.

Changing groupname of /u01/app/oraInventory to oinstall.
The execution of the script is complete.
[root@oracle18c ~]# sh /u01/app/oracle/product/18.3.0/dbhome_1/root.sh
Performing root user operation.

The following environment variables are set as:
ORACLE_OWNER= oracle
ORACLE_HOME= /u01/app/oracle/product/18.3./dbhome_1

Enter the full pathname of the local bin directory: [/usr/local/bin]:
Copying dbhome to /usr/local/bin …
Copying oraenv to /usr/local/bin …
Copying coraenv to /usr/local/bin …

Creating /etc/oratab file…
Entries will be added to the /etc/oratab file as needed by
Database Configuration Assistant when a database is created
Finished running generic part of root script.
Now product-specific root actions will be performed.
Do you want to setup Oracle Trace File Analyzer (TFA) now ? yes|[no] :
yes
Installing Oracle Trace File Analyzer (TFA).
Log File: /u01/app/oracle/product/18.3./dbhome_1/install/root_oracle18c_2019--30_13---.log
Finished installing Oracle Trace File Analyzer (TFA)
[root@oracle18c ~]#

执行完后点击OK