Two BLOBs (OID) in table?

Hello All!

I created entity with 2 BLOB columns in one table: one for image and one
for thumbnail. Storing image and getting it back in another session
works pretty good.

But when I set thumbnail BLOB successfully, the original BLOB becomes
empty. Retrieved entity returns length 0 for image BLOB.

@Lob private Blob image;
@Lob private Blob thumbnail;

Hibernate 3.2.6, Annotations 3.3.0, PostgreSQL 8.3.1, JDBC 8.3-603.
The problem is 100% reproducible. Please, help?

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Stanislav Mironov