If you find a solution, let us know. I don't think recovery is possible without a backup, however. Do you have a recent export maybe? Andrew W. Kerber Oracle DBA UMB "If at first you dont succeed, dont take up skydiving" -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Ujang Jaenudin Sent: Wednesday, February 28, 2007 7:46 AM To: oracle-l@xxxxxxxxxxxxx Subject: disk crash no mirror, NOARCHILEG mode, and NO BACKUP, some datafiles & undo missing folks, and luckily user was SHUTDOWN ABORT database after make datafiles OFFLINE, so when startup, it always try to find the missing undo file..... this is worst case, please help me on this situation...... regards ujang ------------------------------------------------------------------------------ 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. ==============================================================================