Hi, I'm trying to do some tests here - and I'm facing the following problem: Scenario: I do several db calls through normal JDBC - simply - each time I: 1) open connection 2) prepare statement 3) execute it 4) parse output 5) close connection this is done from stateful session bean using JDBC calling stored procedures. this I do 4x100.000 times but after 4x12000 times the process terminates with following exception: 1:12:04,100 WARN [arjLoggerI18N] [com.arjuna.ats.arjuna.coordinator.BasicAction_58] - Abort of action id a00051a:369b:47971163:31 invoked while multiple threads active within it. 11:12:04,100 WARN [arjLoggerI18N] [com.arjuna.ats.arjuna.coordinator.CheckedAction_2] - CheckedAction::check - atomic action a00051a:369b:47971163:31 aborting with 1 threads active! 11:12:04,131 INFO [STDOUT] Unable to get user: Transaction is not active: tx=TransactionImple < ac, BasicAction: a00051a:369b:47971163:31 status: ActionStatus.ABORTING >; - nested throwable: (javax.resou ce.ResourceException: Transaction is not active: tx=TransactionImple < ac, BasicAction: a00051a:369b:47971163:31 status: ActionStatus.ABORTING >) 11:12:04,131 INFO [STDOUT] Unable to update user: Transaction is not active: tx=TransactionImple < ac, BasicAction: a00051a:369b:47971163:31 status: ActionStatus.ABORTED >; - nested throwable: (javax.res urce.ResourceException: Transaction is not active: tx=TransactionImple < ac, BasicAction: a00051a:369b:47971163:31 status: ActionStatus.ABORTED >) I'll be grateful for any advice. Thanks Y View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4122549#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...