Problem changing a field length

Good afternoon from Gran Canaria.

I have changed a field length in one of my tables. After uploading the new solution I get a warning about that and the column has not been changed on the database.

I have manually changed that thru pgAdmin, now I have the DB as the one in my developer system, but the field length has not changed in the Servoy Application.

Do I need to restart the server?

The application server does not see changes to the database done with an external tool. When restarting the server it will reload the datamodel, so that will help.

Another option is to use the function JSServer.reloadDataModel() from the maintenance plugin.
For the future you might consider using the maintenance plugin to do the changes to the datamodel in a pre or post import solution, then you don’t have to do it manually for every import.