I am facing concurrency problem in following scenario.
All our action classes call same stateful session bean . Each action class
obtains the reference from HTTPSession object and calls one and only one
business method.
To prevent the concurrent access to this instance which occurs when user
immediately presses two links quickly in succession I am using the following
code block
execute(...) //execute methods of Action class
{
....
....
//Obtain the session from Request.User will always be in session here
session=request.getSession()
Synchronised(session)
{
//call ejb's business method.
}
}
However sometimes more than one thread is able to pass through, And I get
exception from Appserver. As 2 threads are not allowed for statefull Session
bean.
Can there be problem in above code. Is it ok to synchronise on session object.
Thanks & Regds
Ashwani
Ext: 1860
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