Devart Forums

Hello!

I have been using devart dotconnect for a while now and it usually works quite well.

I have recently updated from version 5.25.42 to version 5.25.49. Since then, my application does not work anymore. On most of my queries, I get the following error:

"ORA-01790: expression must have same datatype as corresponding expression"

I have also tried to use your new version (beta) 5.35, but I get the same error. Moving back to the version 5.25.42 works fine. I am using the entity framework.

In one of your posts, I have found a similar problem (same ora error), but the trick there was to set the Devart.Data.Oracle.Entity.OracleEntityProviderServices.TypedNulls to true. I tried this which made my application start, but every thing became very, very slow and unusable...

Please help me out...

Thanks a lot.

Hello!

I have upgraded to the version 5.25.49, but since then, I also had that expression error.

So I did what is written in this forum (TypeNulls = true). This made it work...

BUT... since then I have big performance problems... An operation that took 1-2 seconds before now takes more than 20 seconds... (create a few new entities and add them to the context).

Any idea?

Thanks for your help

Hello!

When I try to compile my solution, I keep on getting the following error for all my projects. Any idea?

The "DevartEntityDeploy" task could not be loaded from the assembly C:\WINDOWS\Microsoft.NET\Framework\v4.0.20506\Devart.Data.Entity.Build.Tasks.dll. Could not load file or assembly 'Microsoft.Data.Entity.Build.Tasks, Version=3.5.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified. Confirm that the declaration is correct, that the assembly and all its dependencies are available, and that the task contains a public class that implements Microsoft.Build.Framework.ITask.

Thanks for your help.