Best Practice
- From: mek s <sidi.bouzid.meknessy@xxxxxxxxx>
- To: ORACLE-L <oracle-l@xxxxxxxxxxxxx>
- Date: Thu, 19 Jan 2012 09:52:51 +0100
Hello,
We are designing a DR solution using Oracle Data Guard 11gR2.
1- Physical Oracle Data Guard with Primary / Standby database.
2- Use Maximum Availability Mode.
3- Use the Observer for automatic failover.
4- Turn on Flashback databases.
5- Use the broker.
We only have site A and site B. The primary will be placed in the Site A
and the standby with be placed in the Site B.
The primary database will run on host 1 in the Site A. The standby will run
on the host 2 in the Site B.
The observer will run on the host 3 (Until now, we don't know where to
place the observer; in Site A or Site B) but it will run on one of the
application host.
Now, Questions;
1- After a fail over / switch over, will the observer point monitor
automatically the standby site or do we need to point the observer manually
to monitor
the new primary site?
2- Giving my configuration (having only 2 sites), What is the best place to
put the observer? What is recommended? I know that the best solution is to
have a third environment
but, in my case we only have 2. what are your suggestions based on your
real world set up?
3- Giving my configuration (having only 2 sites), What is recommended to
have a *HA solution for the observe*r , without the use of Grid Control?
Thank you,
S
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