Logminer can do this, just to name one. -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Freeman, Donald Sent: Friday, June 08, 2007 12:25 PM To: oracle-l@xxxxxxxxxxxxx Subject: Security Issue Is it possible to recover information from an undo datafile? I have been searching for information on securing oracle datafiles and see that there are .dbf file viewers that claim to be able to view/edit/export the contents as text. I am thinking that its not likely to be possible to reconstruct anything usable from an undo datafile. I know that Oracle 10G has the ability to encrypt the contents of datafiles and store the key in a wallet. We are planning an upgrade in a year but right now I'm having to answer questions about vulnerabilty of backups stored on removable media. Don Freeman Database Administrator 1 Bureau of Information Technology Pennsylvania Department of Health (717) 703-5782 ------------------------------------------------------------------------------ NOTICE: This electronic mail message and any attached files are confidential. The information is exclusively for the use of the individual or entity intended as the recipient. If you are not the intended recipient, any use, copying, printing, reviewing, retention, disclosure, distribution or forwarding of the message or any attached file is not authorized and is strictly prohibited. If you have received this electronic mail message in error, please advise the sender by reply electronic mail immediately and permanently delete the original transmission, any attachments and any copies of this message from your computer system. Thank you. ==============================================================================