Problem with EJBContext.rollback

Question

Hi,
We are testing out some code for transaction control and can't seem to
get the container managed transactions with Oracle Type 4 drivers with
IPlanet6 SP2.
Some problems we encountered were:
1. There does not appear to be any way to check whether the connection
is participating in a transaction?
The class of the connection also does not appear to implement
XAConnection even though we do a lookup
within a Container Managed Transactional EJB. And the rollback also does
not work properly in the attached code
fragment.
2. We have set the EJB Deployment Descriptors properly to be Container
Managed Transactions and "Required", the Resource References are
available in both ejb-jar.xml and ias-ejb-jar.xml, but after meddling
with the App Server settings
for a few days and trying all sorts of combinations, none of them
actually work.
3. IPlanet's Tech Support has not been helpful at all in confirming
whether this is a misconfiguration or a bug (seems
like too important a feature to be not working right?)
We would appreciate any help in determining the exact problem with
either our configuration or code in handling
transactions. Thanks
hoongshen
---------------------------------------- Attached Code
The Stateless Session Bean Code essentially just implements one method
and we can't get the transaction working
with that method.
public long getNextNumber(String name) {
long next;
InitialContext ctx = null;
DataSource ds = null;
Connection con = null;
Statement stmt = null;
ResultSet rs = null;
next = -1;
try {
ctx = new InitialContext();
ds = (DataSource)ctx.lookup("java:comp/env/ecbeans");
con = ds.getConnection();
stmt = con.createStatement();
rs = stmt.executeQuery("select next from testSeq where
name='"+name+"' for update");
if (rs.next())
next = rs.getLong("next");
rs.close();
stmt.close();
stmt = con.createStatement();
if (next==-1) {
stmt.executeUpdate("insert into testSeq (name, next) values
('"+name+"', 2)");
next = 1;
} else {
stmt.executeUpdate("update testSeq set next="+(next+1)+" where
name='"+name+"'");
stmt.close();
con.close();
} catch (Exception ex) {
ex.printStackTrace();
// This fails to rollback the committed data even though we are
supposed to be in a transaction
sc.setRollbackOnly();
return next;
}

Answer 1

try
    setAutoCommit(false);
    int  x = insertRecord1();
    if( x > 0){
                  int  y = insertRecord2();
                 if(y > 0){
                         con.commit();
                 }else{
                         con.rollback();
    }else{
       con.rollback();  
I use MySql 4.1
  con. rollback  it works not