Hello,
I have deployed an application in my Karaf 4.1.5 using JMS, Camel, Hibernate, Aries Transaction Manager and PAX JDBC Pool. Everything works fine except when I process parallel requests where I sometimes get a SQLException from dbcp class ManagedConnection reporting "Connection can not be used while enlisted in another transaction" and the request fails. After some analyses I came to the assumption that it is maybe related to the fact that Hibernate doesn't support a ConnectionProvider for dbcp. So I switch the connection pool to c3p0 which is supported by Hibernate. But here I face another problem just for a single request: some DB operations get executed before the transaction commits so I am also unable to rollback everything on exception. It seems that all flushes initiated by Hibernate directly go into the DB. So I assume that anything with the transaction synchronisation/coordination is wrong. The transactional context is defined by a @Transactional annotation. From debugging I can see that the AriesPlatformTransactionManager and the C3p0PooledDatasourceFactory is involved. Do you have any hint what could cause this problem or how can I can I do more depth analyses? Thanks in advice, Christian
