Hi,
I had the same error.
It was due to the fact that I had Raster set to be stored as SDO_GEORASTER in the DBTUNE as a result of using the dbtune.sdo file when I installed ArcSDE to use SDO_GEOMETRY for vector data.
I updated the DBTUNE table using sdedbtune command to SDELOB and the problem was resolved.
Hope this helps,
Angelo Cirocco
Professional Services Senior Consultant
Esri Australia