1.下载轻量级的ODAC安装包https://www.oracle.com/database/technologies/odac-downloads.html2.解压ODAC112030Xcopy_x64.zip(我解压到了C盘下):  3.在命令行界面进入解压文件夹后运行“install.batoledbc:\oracle odac”安装:4.在系统环境变量中，为Path添加“C:\ora