This happened just a few minutes ago, but I got it working. Just needed to do alter database recover datafile ...... Brought file back into offline mode and then I was able to online the file. Quite a few of you suggested this and it worked! Thanks for the fast response everyone! I really appreciate it! Jeremy -----Original Message----- From: Allen, Brandon [mailto:Brandon.Allen@xxxxxxxxxxx] Sent: Tuesday, February 09, 2010 3:59 PM To: SHEEHAN, JEREMY; oracle-l@xxxxxxxxxxxxx Subject: RE: datafile goof! Need help! Do you have a backup? Did you try restoring and recovering the original file? Privileged/Confidential Information may be contained in this message or attachments hereto. Please advise immediately if you or your employer do not consent to Internet email for messages of this kind. Opinions, conclusions and other information in this message that do not relate to the official business of this company shall be understood as neither given nor endorsed by it. -- //www.freelists.org/webpage/oracle-l