I don't know much about this area, but I wonder if you are using user transactions from your client(s). In any case knowing exactly where tx are being started/stopped/controlled would be useful.
david jencks On 2002.11.25 16:48:21 -0500 Beau Cronin wrote: > Hi all. I've been having problems with a multi-threaded remote client. > I'd like to have two threads on a client accessing JBoss remotely, > possibly the same data at the same time. When I do this naively and > both clients try to access the same entities, JBoss throws one of two > errors: > > 13:40:57,457 ERROR [BeanLock] Application deadlock detected: > TransactionImpl:XidImpl [FormatId=257, > GlobalId=misosoup.ICSI.Berkeley.EDU//19663, BranchQual=] has deadlock > conditions. Two or more transactions contending for same resources and > each have locks eachother need. > > or > > 13:43:09,470 ERROR [STDERR] > javax.ejb.TransactionRolledbackLocalException: The iterator of a CMR > collection may only be used within the transction in which it which it > was created > > In the first case, it seems like each thread is creating its own > transaction and that these transactions are in contention. In the > second, it seems like both threads are triggering calls in the same > transaction and that these are trying to iterate over the same CMR > Collection. > > I've tried using both the same remote object and different ones; both > situations lead to the same result. > > So the question is: how do I do multithreaded remote access from a > client to avoid this? Note that different clients don't have this > problem, only mutlitple threads from the same client. > > Thanks, > > Beau Cronin > > > > ------------------------------------------------------- > This SF.net email is sponsored by: Get the new Palm Tungsten T > handheld. Power & Color in a compact size! > http://ads.sourceforge.net/cgi-bin/redirect.pl?palm0002en > _______________________________________________ > JBoss-user mailing list > [EMAIL PROTECTED] > https://lists.sourceforge.net/lists/listinfo/jboss-user > > ------------------------------------------------------- This SF.net email is sponsored by: Get the new Palm Tungsten T handheld. Power & Color in a compact size! http://ads.sourceforge.net/cgi-bin/redirect.pl?palm0002en _______________________________________________ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
