Symfony/Doctrine: Transaction involving multiple objects/functions - mysql

Question

I want to perform a certain set of operations on multiple models/tables using Doctrine with Symfony. Here is what I'm doing:
public function myFunc()
{
$conn = Doctrine_Manager::connection();
try {
$conn->beginTransaction();
$prop_trans->save($conn);
self::doSomething1($conn);
$bill_appor->save($conn);
// Final Committ
$conn->commit();
return $prop_trans;
} catch (Exception $exc) {
if ($conn)
$conn->rollback();
throw $exc;
}
}
public function doSomething($conn)
{
$obj = new Trans();
// this function might create & save another child record
$obj->doSomething2($conn);
$obj->save($conn);
}
However, when there is an exception (code or db level), I wonder if the rollback works, as I see some records being saved.
My understanding is that, as long as I've opened a connection, begun a transaction, all methods using the connection $conn are running in the same transaction. If something fails, all rollback.
I also tried to use savepoints, but I haven't been able to work with them. Can someone pl tell me if passing the connection around is enough to make everything run the transaction?
Is it because a MySQL auto_committ attribute is set or something?
Thanks

Answer 1

Well, transactions are supported only over InnoDB tables and I believe, that some of your tables are MyISAM. So, rollback works only on InnoDB ones and you see changes to MyISAM ones left intact.

Answer 2

just try
catch (Exception $exc) {
$conn->rollback();
}
in your try ctach
or
just put try catch on your other function as well