Chapter 5. JDBC and Transactions

JBossJTA needs to associate work performed on a JDBC connection with a specific transaction. Therefore, applications must use implicit transaction propagation and indirect transaction management. For each JDBC connection, JBossJTA must be able to determine the invoking thread’s current transaction context.

Nested transactions are not supported by JDBC 2.0. If you try to use a JDBC connection within a subtransaction, JBossJTA throws an exception and no work is performed using that connection.