Jérémi, you are my hero!
can you try to add : ?useServerPrepStmts=false at the
end of your
connection url in hibernate.cfg.xml
I tried and it works.
It's a problem with ubuntu, i don't know why.
Me neither, but now that it works ... I will move the DB from my local
system to a debian sarge server in a few weeks, maybe than no more
fixes are required.
Until then: I owe you. I suppose you are from France? I am sitting in
Hamburg, Germany so neither you coming around for a beer nor me coming
to down to help in the kitchen will work, but a million thanks anyway.
Jan