Veritas Storage Foundation 5.1 SP1 for Oracle RAC Administrator"s Guide (5900-1512, April 2011)

You can also use this procedure to remove the registration and reservation keys
created by another node from a disk.
To clear keys after split-brain
1
Stop VCS on all nodes.
# hastop -all
2
Make sure that the port h is closed on all the nodes. Run the following
command on each node to verify that the port h is closed:
# gabconfig -a
Port h must not appear in the output.
3
Stop I/O fencing on all nodes. Enter the following command on each node:
# /sbin/init.d/vxfen stop
4
If you have any applications that run outside of VCS control that have access
to the shared storage, then shut down all other nodes in the cluster that have
access to the shared storage. This prevents data corruption.
5
Start the vxfenclearpre script:
# vxfenclearpre
Administering SF Oracle RAC and its components
Administering I/O fencing
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