[JBoss-user] Urgent, May someone tell me how JBoss realize a Transaction?

Now I am using JBoss+Tomcat 2.22 pack.

I setup a Datasource that connect to SQLServer 7.0 with the JDBC Driver of WebLogic (BEA Sys, a Type 4 Driver).

And in my Client Class that calls an EJB (Entity), I use the "javax.transaction.UserTransaction", it seems JBoss

can not find the name in it's Context. Then I use a TxManager class in the following way:

TxManager tx = null;

try {
tx = org.jboss.tm.TxManager.getInstance();

tx.begin();

zee120Beanhome home = getHome();

zee120BeanPK pk = new zee120BeanPK("001");

zee120 cli = home.findByPK(pk);

cli.remove();

tx.commit();

} catch (Exception e) {

tx.rollback();

}

The record "001" is expected to exist in my DB still if some error occurs, but the result is it was removed.

How can I use Transaction with JBoss?

Thanks for your help.

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