I have an application built in Asp.net, we upgraded the oracle database to 19c "where we were working on oracle 11g", first give us the below error:

Could not install package 'Oracle.ManagedDataAccess 21.5.0'. You are trying to install this package into a project that targets '.NETFramework, Version=v4.5', but the package does not contain any assembly references or content files that are compatible with that framework. For more information, contact the package author.

After searching I found the Oracle.ManagedDataAccess 21.5.0 requires .NET Framework version 5.

Anyway, I upgrade the target framework for all projects from 4.5 to 4.7.2 and that issue didn't appear anymore.

After that, I tried to install Oracle.ManagedDataAccess 19.13.0 and it was installed successfully but when I try to login "need to connect to the database" it give me the error message:

Oracle Data Provider for .NET does not support Oracle 19.0.48.0.0

I tried to clean the solution and rebuild it, but it didn't fix the problem.

CodePudding user response：

Upgrading your target framework to .NET Framework 4.6.2 or later is the fix. No need to use an old version of the package.