My Line data for one of my products is rendering with gaps between them (noticeable with the blue motorways), and also in some cases not rendering any lines at all (the red lines!).
If all other line styles are removed from the SLD then they render fine.
Attached is a zip with the line data in Oracle SQL loader format, the SLD and example screen shots of the error and expected output.
This is taken at a scale of 1:210,000
SRS = EPSG:27700
(x,y) = 571470,157425