Hi Hans, Tks for you attention... Yes,I had validated the geometry. When the geometry is a line (2002), Oracle spatial does not consider as error. Regards Eriovaldo On Sun, Oct 13, 2013 at 10:55 AM, Hans Forbrich <fuzzy.graybeard@xxxxxxxxx>wrote: > Have you validated the layer or the geometry and looked at the resulting > error? > > > http://docs.oracle.com/cd/E11882_01/appdev.112/e11830/sdo_objgeom.htm#sthref1912 > > On 13/10/2013 4:06 AM, Eriovaldo Andrietta wrote: > > Hello, > > Is there a way to identify if a line (gtype = 2002) crosses itself ? > > -- > //www.freelists.org/webpage/oracle-l > > > -- //www.freelists.org/webpage/oracle-l