Exception running J2EE Kodo car example

Question

on Windows2000, Jboss3.2, running the Kodo J2EE tutorial example When I
add a car to the database (default Hypersonic datasource) I obtain this
exception:
HTTP ERROR: 500 RuntimeException; nested exception is:
com.solarmetric.kodo.runtime.FatalDataStoreException:
java.sql.SQLException: You cannot commit during a managed transaction!
[code=0;state=null] NestedThrowables: java.sql.SQLException: You cannot
commit during a managed transaction!
RequestURI=/sample/Save.jsp
Can you help me?

Answer 1

If you are using managed XA transactions, you need to specify a second
connection factory Kodo can use for things like allocating sequence
numbers and other database operations that should not be dependent on the
current global transaction. See the documentation on the various
ConnectionFactory2 settings, and our documentation on XA transactions.