RAC One Node: downtime after HW-outage?
Hi ,
RAC One Node seems to be a good alternative compared to a "regular" RAC.
Since we don't have any experience with RAC One Node we are currently going through the available documentaion and try to get a picture of the advantages/disadvantages.
One major point is the question "what will exactly happen when an HW-failure or outage occurs?". It's my understanding - and what Oracle has documented - that the Oracle Clusterware provides failover protection to Oracle RAC One Node. If the node fails, Oracle Clusterware will automatically detect the failure and restart the Oracle RAC One Node database on another server in the pool.
In our case we would have the active node in Datacenter 1, the passive node in Datacenter 2. Therefore if the node in Datacenter 1 fails, the database should then get started on the node in Datacenter 2.
My questions now are:
- will that really automatically be done?
- what happens to the sessions which were connected to the database before the HW-failure?
- is it possible to determine how long this failover will take?
I'm sure that somebody has already tested this situation - any help will be appreciated.
Rgds
JH
Edited by: VivaLaVida on 05.12.2012 08:57