arcpy - Identifying true curves/arcs in ArcMap?

The only good way of creating circles in ArcMap is using true arc, (compound curves) but I need to convert those to vertex (densifying) because of a compatibility problem. I need info for geodatabase and SDO_geometry (arcsde)

and yes there is a way. I use:

UPDATE layer1 a SET arctype = 'compound' WHERE has_compound_curves(a.shape) <> 0;

and then using ET Geotools to densify layer by layer.

But there should be easier way of doing this straightforward in Oracle or ArcMap, and I just want to densify the features that have true arc. I don't want any unnecessary vertices on straight lines and so on.

How can I identify true arcs in ArcMap, and how can I densify them as fast and easy as possible?

Same for Oracle SQL.