As some users on StackOverflow have said, your question is unclear.
It doesn't make sense at all to want to 'reformat' a time stamp, because a time stamp is not a
string. A format is a property of a string. Now, please answer the following questions:
What is the type of the column in Informix?What is the value of the field that is displayed when you look at it in the Informix user interface?Does the value you get in Hibernate match the value you see in Informix?Do you want to change the value you get in Hibernate to something different from what you see in Informix?If you get matching values and you want to change the date and time in Hibernate, then WHY do you want to change it?