Hi, Before I describe the problem, I'll describe my environment. This is a development environment built over 1.5 yrs ago: * We have a 2 node Oracle RAC Cluster. * built on two Dell PowerEdge 1850 Servers (Intel(R) Xeon(TM) CPU 3.20GHz) * OS is RHEL3 U3 * Kernel 2.4.21-20.ELsmp * these 2 servers are attached to an EMC AX100 SAN via fibre channel * HBA (QLogic QLA6312 PCI to Fibre Channel Host Adapter) * Oracle Version: Oracle Database 10g Enterprise Edition Release 10.1.0.4.0 * OCFS: ocfs-tools-1.0.10-1 .... ocfs-2.4.21-EL-smp-1.0.13-1 ... ocfs-support-1.1.5-1 * We have two ocfs volumes mounted /u01 and /u02 * These servers were last rebooted 17 days ago Okay, hope that is sufficient info for starters... now here is the problem we experienced: I arrived at work this morning and discovered some errors in node2's Oracle alert log, the error occurred in the middle of the night, the archiver was complaining it couldn't archive a log to the flash recovery area on /u02: ...(snip)... Jun 8 01:10:49 2007 Private_strands 0 at log switch Thread 2 advanced to log sequence 30694 Current log# 3 seq# 30694 mem# 0: /u01/oradata/rgcsd/redo03a.log Current log# 3 seq# 30694 mem# 1: /u01/oradata/rgcsd/redo03b.log Fri Jun 8 01:10:49 2007 ARC0: Evaluating archive thread 2 sequence 30693 Fri Jun 8 01:10:50 2007 Errors in file /usr/app/oracle/admin/rgcsd/bdump/rgcsd2_arc0_2036.trc: ORA-01264: Unable to create archived log file name ORA-19800: Unable to initialize Oracle Managed Destination Linux Error: 13: Permission denied Fri Jun 8 01:10:50 2007 Errors in file /usr/app/oracle/admin/rgcsd/bdump/rgcsd2_arc0_2036.trc: ORA-16032: parameter LOG_ARCHIVE_DEST_10 destination string cannot be translated ORA-01264: Unable to create archived log file name ORA-19800: Unable to initialize Oracle Managed Destination Linux Error: 13: Permission denied ARC0: Archiving not possible: No primary destinations ARC0: Failed to archive thread 2 sequence 30693 (16032) ARCH: Archival stopped, error occurred. Will continue retrying ...(snip)... The archiver continued retrying until it succeeded 6 minutes later (at 01:16:38) and afterward everything continued to function seemingly smoothly. I checked node2's /var/log/messages logfile and I found the following errors occurred at the same time the archiver had its problems: ...(snip)... Jun 8 01:10:50 rac4 kernel: (2036) ERROR: status = -17, Common/ocfsgendirnode.c, 1535 Jun 8 01:10:50 rac4 kernel: (2036) ERROR: status = -17, Common/ocfsgencreate.c, 1625 Jun 8 01:10:50 rac4 kernel: (2036) ERROR: status = -17, Common/ocfsgencreate.c, 1821 Jun 8 01:10:50 rac4 kernel: (2036) ERROR: status = -17, Linux/ocfsmain.c, 2193 Jun 8 01:10:50 rac4 kernel: (2036) ERROR: status = -17, Linux/ocfsmain.c, 2493 ...(snip)... (I checked node1's /var/log/messages logfile and these ocfs errors do NOT appear on that node) I checked the event log for the EMC AX100 SAN but there is nothing reported. Has this happened to anyone else? Anyone have any ideas what the root cause of this hiccup could be? This is the first time this has happened to us. Thanks for your input, Phany