Error: Oracle Spatial: "Abstract Data Types not supported"
This error occurs when adding an SDO_GEOMETRY column to a table already registered with ArcSDE:
“Abstract Data Types not supported”
This problem can occur when automatic registration of third-party Oracle Spatial tables recognizes that a DBMS table that was registered to ArcSDE has been altered to contain an SDO_GEOMETRY column. It may also occur any time a layer was deleted using sdelayer –o delete and then brought back into the schema with the same name under which it was previously registered.
Solution or Workaround
Refresh your connection in ArcGIS.