Hibernate optimization problem

Hi,

I'm developing a web application using spring and hibernate and Mysql. My database contains huge records (more than 2 lacs). Most of the time, for each user, i need to fire a query to select a considerable number of records (say 20 thousand). After fetching the result i need to disply it using pagination. So i don't nedd all the records at the same time, but by clicking on the next page (or a specific page number) link i need to show the respective records.

While executing the query, it takes long time and responds with out of memory error. I tried setting getHibernateTemplate().setFetchSize(200) but the performance is same. I tried different combination of changing the mysql driver, setting hibernate.jdbc.batch_size but all in vain.

How i can resolve this performance issue? wat approach i can follow to solve this? What parameters i need to take care for a large database application like this?

Criteria.setFirstResult(), Criteria.setMaxResults()

and not everyone knows what a lac is :-)

Originally posted by pascal betz:
and not everyone knows what a lac is

???

Lac is also a less common way to spell lakh, in the Indian numbering system equivalent to 100,000

http://en.wikipedia.org/wiki/Lac_%28disambiguation%29

i learned that when i was in india ....

there is also "crore" which is a 100 * lakh (lac) :-)