版本区别 11g安装包只有300M，18C、21C安装包2G 21C https://www.oracle.com/cn/database/technologies/appdev/xe.html https://www.oracle.com/cn/database/technologies/xe-downloads.html 18C https://www.oracle.com/database/technologies/xe18c-downloads.html 11g https://www.oracle.com/database/technologies/xe-pri...