The code to copy blobs is used in a couple of places, yes, though unfortunately I don't remember quite where.

grep through the CR and CMS though and I think you'll find all that counts.  I think there are a couple of copy routines in PL/SQL that in turn rely on the Java blob copy code.

These changes shouldn't go in 5.1, though - don't commit until we branch! :)

No intention to commit yet. I am doing this off the 5.1 branch because HEAD doesn't setup, it choked on kernel right away on Thurday when I last tried.