One node of Oracle RAC reboots often with the error "o2hb_write_timeout:172 ERROR: Heartbeat write timeout to device dm-5 after 60000 milliseconds"

Solution Verified - Updated -

Issue

  • One node of the two node Oracle RAC cluster is getting rebooted frequently. Following messages appear in the logs just before reboot:

    Feb 19 06:16:19 hostname kernel: qla2xxx 0000:05:00.0: scsi(4:0:6): Abort command issued -- 1 1991d49 2002.
Feb 19 06:22:29 hostname kernel: qla2xxx 0000:05:00.0: scsi(4:1:7): Abort command issued -- 1 19b25d0 2002.
Feb 19 06:25:01 hostname kernel: (events/5,55,5):o2hb_write_timeout:172 ERROR: Heartbeat write timeout to device dm-5 after 60000 milliseconds

Environment

  • Red Hat Enterprise Linux 5.5
  • Oracle RAC cluster
  • QLogic Corp. ISP2432-based 4Gb Fibre Channel to PCI Express HBA
  • Ocfs2 filesystem

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