From the thread, I see that this was solved. Unfortunately it is too late to do this diagnostic: cd /filesystem_in_question; df -h . When I find "everything" missing, it usually means that something caused the volume containing the filesystem to unmount, leaving the directory entry on the / or root location. If that is what df -somearg . reports when in the directory, then umount, mount usually fixes the problem, unless the contents were in flux, in which case you may need to fsck the filesystem. Glad you had a standby, sorry the root cause remains a mystery. mwf -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Bill Zakrzewski Sent: Monday, April 26, 2010 9:38 AM To: Oracle-L@xxxxxxxxxxxxx Subject: Urgent!! We had some very bad storms in the area last night and this morning our database server appears to have been wiped almost clean (the server did not fail or reboot - uptime was 17 days). The oracle software is gone and the database files are also no longer visible. The server was setup with logical volumes and they all appear to be empty. Has anyone had something similar happen? Opening a ticket with Red Hat, but figured I would hit the list to see if I get a quicker response. RH 5 Oracle 10.2.0.4.0 Thanks, -Bill-- //www.freelists.org/webpage/oracle-l -- //www.freelists.org/webpage/oracle-l