Hi,

is it really guaranteed, also under very heavy load, that a client has exclusive access to a statefull session bean?

Or might it be a problem to use ArrayLists as local variables in a method of a stateless session bean?

I use a stateless session bean in the context of a container managed transaction.
The bean itself does not require transactions.
The bean methods just compute some functions.

Under very heavy load (ca. 30.000 transaction / hour), the bean sometimes produces non reproducable wrong function results (ca. 1 / hour).

The function results are stored in ArrayLists in the method.
Might this be a problem?

Thanks,
Claudia