Hi,
I just talked to ESRI support about this matter.
It was happening to me at 10.1 when I used data whose spatial type was ST_GEOMETRY. At 10.0 I did not have this problem.
What I learned was that ST_GEOMETRY data does not have a Feature table (unlike LOB or Binary which do have one)!
So.. at 10.0 ArcGIS just pretended as if there was a Feature table - when you analysed it nothing actually happened. 10.1 acknowledges that there is no Feature table and does not offer it as an option for analysis.
Wiley Osborn
Contra Costa County,CA
Public Works Dept