Howard, what version of Redhat? What kind of disk are the data files assigned to? Is an LVM in use? Have you verified the file definitions in the LVM? -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Howard Latham Sent: Friday, October 25, 2013 11:24 AM To: ORACLE-L Subject: Funny one - Crash! Oracle 11.2 Redhat enterprise Linux One of My 8 Year old Redhat LInux Servers keeps crashing every time I add an 18gig datafile to a tablespace. It 'goes' away and has to be powered off and on to get it back. And when I tried adding 4 gig files it crashed on the 4th! Its probably going to be a hardware investigation but I just wondered if any internals gurus thought it might be Disk or Memory that is going pop or something else? - Is a datafile create working the disk control hard? or Working memory hard? - less likely? -- Howard A. Latham -- //www.freelists.org/webpage/oracle-l -- //www.freelists.org/webpage/oracle-l