Transaction using stateful session bean.

Question

All,
I was implementing "Transaction" part using statefull session(trying to understand how transaction work).
I created a Statefull session bean, here in one method create 2 sql queries
query1:update Employees set LastName='newname' where EmployeeID = 9
query2:update Customers set CompanyName = 'newname Inc.' ContactName = 'Maria Anders'
"query1" works fine, but "query2" is not correct(syntax error) hence will not be executed. This will throw a SQLException.
According to EJBspec, rollback will happen if there is a system exception. And I guess SQLException is systemexception.
But when I query "Employees" table, I get the data updated through the "query1".
What I was excepting was the first query which was executed should have rolled back because the second query has thrown a SQLException.
I tried using ContainerManaged transaction and BeanManaged transaction.
But in both cases transaction is not getting rolled back.
I have tried with REQUIRED and REQUIRESNEW attributes for container managed transactions with Isolation level as Read Commited.
Is my understanding correct?
TIA,
Vijay

Answer 1

Tried using Bean managed transactions but with the same result. Given below is the sample code.
UserTransaction uts = null;
try {
uts = (UserTransaction)(ctx.getUserTransaction());
uts.begin();
Connection con = null;
con = getCountConnection();
PreparedStatement ps = con.prepareStatement(sqlselectUserId);
ps.executeUpdate();
PreparedStatement ps1 = con.prepareStatement(sqlselectUserDetails);
ps1.executeUpdate();
uts.commit();
catch(SQLException e) {
     uts.rollback();