Hi,
While reading backup and recovery manual, i read the following:
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transaction recovery
Transaction recovery involves rolling back all uncommitted transactions
of a failed instance. These are "in-progress" transactions that did not
commit and that Oracle needs to roll back. It is possible for
uncommitted transactions to get saved to disk. In this case, Oracle
uses undo data to reverse the effects of any changes that were written
to the datafiles but not yet committed
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Can someone please explain how can uncommited transactions gets saved
to disk.
I assumed only commited data gets saved to disk.

Thanks.
Giridhar Kodakalla.