Hibernate Delete Error: Batch Update Returned Unexpected Row Count

Question

I wrote this method below that is suppose to delete a member record from the database. But when I use it in my servlet it returns an error.

MemberDao Class

Answer 1

this is the solution for my case, maybe it will help you!

Actually it was a conversion problem between a database field type (timestamp on postgreSQL) and his equivalent property type (Calendar) on hibernate xml file. When Hibernate did this update request, it didn't retrieve the row because the request interrogate with a bad convert Calendar value. So I simply replaced property type "Calendar" in "Date" in Hibernate xml file and the problem was fixed.