Oracle Developer Tools for Visual Studio 2019(ODTforVS2019_193000),压缩包中包含安装文件、安装说明、Oracle.ManagedDataAccess.dll文件,安装时会提示Oracle Developer Tools for Visual Studio 2017,这继续安装即可,在VS2019中使用时,会提示升级,按要求升级即可。代码中直接引用Oracle.ManagedDataAccess.dll