Nullable object must have a value.

[TarunVallabhuni]

If I try to load a Table from Oracle. I get this error. We are able to load a different table from the same schama in the same connection. Any tips on how to get rid of this error?

[lbendlin · Accepted solution]

That's a rather funny error message.  If you have a Pro license you can open a Pro ticket at https://admin.powerplatform.microsoft.com/newsupportticket/powerbi
Otherwise you can raise an issue at https://community.fabric.microsoft.com/t5/Issues/idb-p/Issues .

[TarunVallabhuni]

Thank you for responce.

I had to open a support ticket with microsoft, and it is still under investigation.

[lbendlin]

Please let me know what the outcome is. Did they acknowledge the irony?

[TarunVallabhuni · Accepted solution]

This solved my issue: 

While connecting to the Oracle database, a few options are checked in by default. By un-checking the option: "Include relationship columns". The issue is solved. 

P.S. This post explains that there is a performance improvement when we un-select the "include relationship columns". 
Overhead of getting relationship columns in Power BI DirectQuery mode (crossjoin.co.uk) 

[lbendlin · Accepted solution]

That's a rather funny error message.  If you have a Pro license you can open a Pro ticket at https://admin.powerplatform.microsoft.com/newsupportticket/powerbi
Otherwise you can raise an issue at https://community.fabric.microsoft.com/t5/Issues/idb-p/Issues .