Stateless Session Bean Instances - How to limit them ?

vinay076 Jan 19, 2006 7:48 AM

Hi
We have few stateless session beans. Whenever a user accesses these beans an instance is created. It starts from 1 and keeps on increasing even beyond the count mentioned in standardjboss.xml under tag
<container-pool-conf>
50
true
</container-pool-conf>
I have even tried using but to no avail. Because of this we are having thousands on EJB instances on server which is consuming a lot of memory.
Any solutions please.

1. Re: Stateless Session Bean Instances - How to limit them ?

dimitris Jan 19, 2006 7:59 AM (in response to vinay076)

Can you provide a minimal testcase that replicates this behaviour? Thanks.
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2. Re: Stateless Session Bean Instances - How to limit them ?

vinay076 Jan 19, 2006 9:02 AM (in response to vinay076)

I actually don't have a test case but we have deployed the application on Production and then found the problem.
Currently I am running this scenario in test system
1. I am clicking on a hypelrink to view some details
2. These details are fetched through a method in EJB (Local)
3. User changes and presses save
4. Update functionality in same EJB is called(local)

When I view from Jmx-console of Jboss , i find CreateCount of this ejb has increased by 2. Is this the no of instances in container or its just the call stats? I am assuming it to be no of instance.
Now this EJB's local home is also cached

Map cache = Collections.synchronizedMap(new HashMap());

public EJBLocalHome getLocalHome(String jndiHomeName)
if (cache.containsKey(jndiHomeName)) {
home = (EJBLocalHome) cache.get(jndiHomeName);
} else {
home = (EJBLocalHome) ic.lookup(jndiHomeName);
cache.put(jndiHomeName, home);

But surprisingly everytime it creates new instance
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