Re: 9iR2 RAC networks
- From: K Gopalakrishnan <kaygopal@xxxxxxxxx>
- To: davidsharples@xxxxxxxxx
- Date: Tue, 3 May 2005 15:01:29 +0200
David:
Not quite true. If the private interconnct fails (unless you have
configured NIC failover for private intereconnect) there will be a
node eviction.There are couple of underscore parameters to control
the behavior and the time when it should be evicted. Typically Oracle
Cluster Manager detects the failure and understands whether that is a
network failure or node failure from the quorum device.
If there is a network failure, other node will be still writing in the
quorum device, but it may not be able to ping. In this case the
Cluster Manager will detect the failure and the node which owns the
voting disk will survive (of course there are different algorithms
used for split-brain resolution, and the above answer is quite over
simplified)
Only in AIX, if one interconnect fails , the other network card is
automatically selected (this is called as TNFF Transperent Network
Failover Failback).
--=20
Best Regards,
K Gopalakrishnan=20
Co-Author: Oracle Wait Interface, Oracle Press 2004
http://www.amazon.com/exec/obidos/tg/detail/-/007222729X/
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