And to point out that I'm not being obtuse, here is a snippet from http://oss.oracle.com/bugzilla/show_bug.cgi?id=822 : Environment: Linux x86-64 Redhat 4.0 Update 3 OCFS2 1.2.3 3-node cluster. Problem: After installation, created two filesystems to be used for software. To limit timeout problems, increased the O2CB_HEARTBEAT_THRESHOLD TO 31. During maintenance window, decided to use the OCFS2 filesystem to store a large backup file (about 5-10 gig file). SCP'ed the file from an outside server to node1 of the cluster using command "scp $file oracle@sachlp10:/ocfs2_fs1/. After a few minutes, node1 crashed. Did not find error messages on node1, but found them in /var/log/messages on node2: ...wow, sounds like a pretty aggressive workload, right? -- //www.freelists.org/webpage/oracle-l