About save data into table with hibernate

[tengxh]

I use the getHibernateTemplate().saveOrUpdate(obj) to save the data,inputing 
with beaneditform component of T5.After i click the create/update button ,i 
query the table with sql analyse tool immediately,the new data exists,but after 
a while ,the new data will lost.How can i save the new data into the table 
forever.