Synchronizing QueueImpl::getRefsOperation (per TX) would fix the test: final RefsOperation getRefsOperation(final Transaction tx) | { | - RefsOperation oper = (RefsOperation)tx.getProperty(TransactionPropertyIndexes.REFS_OPERATION); | - | - if (oper == null) | + synchronized (tx) | { | - oper = new RefsOperation(); | - | - tx.putProperty(TransactionPropertyIndexes.REFS_OPERATION, oper); | - | - tx.addOperation(oper); | + RefsOperation oper = (RefsOperation)tx.getProperty(TransactionPropertyIndexes.REFS_OPERATION); | + | + if (oper == null) | + { | + oper = new RefsOperation(); | + | + tx.putProperty(TransactionPropertyIndexes.REFS_OPERATION, oper); | + | + tx.addOperation(oper); | + } | + | + return oper; | } | - | - return oper; | } | View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4217224#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...