Nested transactions?

Does Oracle have nested transactions? i.e. can I do something like this:

start transaction

insert foo...

start transaction

insert bar...

rollback

insert baz...

commit

and have foo and baz done, but not bar ? Other databases have this, yet I can't see how to do it here. I am using OCI to access the database. But an example in PL/SQL would be fine too.
. Received on Tue Dec 24 1996 - 00:00:00 CST