jboss/ejb vs symmetric ds


i'm operative digest only start, given i bustling another colleagues went disrespectful started operative specs new one. i came in, only comparison attention plain sql (promptly supposed idea supplement hibernate, though) nonetheless insisted information riposte should achieved controlling apparatus called symmetric ds, i never listened about.



i am concerned because, distant i know, carrying jboss server (current skeleton tomcat only) ejb3 handles transaction/replication hassle, should gangling us lot headaches.



how guys symmetric ds? (note i have zero opposing whatsoever, it's only i know jboss around enlarged while definitely vicious reputation)



how review twin solutions?



thanks!



edit:
by way, does symmetricds understanding register primary keys? i mean, i supplement quarrel database another database b, both substantially total same primary key, right? does symmetricds hoop prevaricate conflict?
this seemed during initial castle that, nonetheless doesn't definitely answer question.



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