Sams Teach Yourself EJB in 21 Days

Best Practices

The J2EE architecture encourages the use of container-managed transaction demarcation. It's the preferred approach over bean-managed transaction. Use container-managed transaction demarcation unless you have a specific need for bean-managed transactions. CMT should be used wherever possible to minimize the overhead of writing code to a transaction management service API. Not only will this result in less work for you as a programmer, but it will also reduce the possibility of errors in the final code. For example, it will keep you from accidentally not committing a transaction or committing too early. It also enables you to change the behavior without programmatic changes. Never demarcate transactions from an EJB with container-managed ...