Hello,
I imported my data using an Oracle source and am not able to change the data type for any of the fields in FW. The data type field in the properties tab is just grayed out. Is there any way I can fix this?
That's because FM is reporting what Oracle says the data type is. (there's some mapping to more general types in some cases).
If you want to have them different data types, cast them to the desired type in your model query subjects in the business layer.
Just out of curiosity, what business purpose is being served by your intended action?