Most likely either a problem with a column definition (DB servers like PostGres and MySQL are morphing their proprietary time/date columns into SQL standard ones as new versions come out...) or in the related query.
It might also be related to using a new DB with an old
JDBC driver (or vice versa).
Where is this happening, what does the log file say, what is your environment?
[originally posted on jforum.net by monroe]