Vani,

You can use the petstore trick. Use a facade class which sychronizes each
call to your session bean. That should do the trick.

This is a _famous_ problem with session beans.

regards,

the elephantwalker
www.elephantwalker.com


-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Vani H.S.
Sent: Wednesday, March 20, 2002 12:04 AM
To: Orion-Interest
Subject: Concurrent calls to Session bean methods


Hello All,

  I have been trying to deploy an application consisting of session beans
and mdbs onto orion1.5.4.
  But I seem to run into deadlocks, because my session bean gets called
concurrently. Please can anybody can tell me if there is a setting to allow
concurrent calls so that, when a session bean method is called at one time,
the EJB container blocks the concurrent method call and allows it to proceed
when the previous call has completed?
  If not, how should this problem of concurrent calls be handled in orion?
  Please help.
Thanks,
Vani





The allow-concurrent-calls element specifies whether a stateful session bean
instance allows concurrent method calls. By default, allows-concurrent-calls
is false. However, when this value is set to true, the EJB container blocks
the concurrent method call and allows it to proceed when the previous call
has completed.





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