entity bean on-find optimization

[asanjay]

Hi,
I'm trying to optimize entity bean access by using on-find strategy in readahead. But instead I managed to degrade the performance. Looking at the documantation I realized that this is because all access to all the entity beans has to be withing a single transaction so that container doesn't have to refresh the data from the database.
So I created a user transaction before I access the entity beans and then I commit the transaction when I finish, even though it is only a read that I am doing. Is there any way to avoid this?

Secondly I also realized that while I am iterating over the collection of entity beans that I retrieved, all other clients are blocked till I finish. Is there a way to avoid this too?

thanks
sanjay

[julien.dubois]

Hi,

First of all which version of JBoss are you using? There's a huge performance increase in this field with JBoss 3.2.2 (IMHO JBoss 3.2.1 was completly broken).
Secondly are you using commit option A, and have you set all your getXxx() methods as read-only?
I recommand this link :
http://linuxintegrators.com/jbossBlog/bburke/?permalink=Optimizing+JBoss%3A+Experiences+with+SPECj2002.html

HTH,