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Where should I put the Observer in a Fast-Start Failover configuration?
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The video explains best practices and different failure scenarios for different observer placements. It also shows how to configure high availability for the observer.
Here's the summary:
Always try to put the observer(s) on an external site. If you don't have any, put it where the primary database is, and have one ready on the secondary site after the role transition.
Don't put the observer together with the standby database!
Configure multiple observers for high availability, and use the PreferredObserverHosts Data Guard member property to ensure you never run the observer where the standby database is.
Links:
The importance of Fast-Start Failover in an Oracle Data Guard configuration
Oracle 19c Data Guard Broker - Managing the Observer
Oracle 19c High Availability Overview and Best Practices - Configure Fast-Start Failover
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Copyright © 2022, Oracle and/or its affiliates.
Here's the summary:
Always try to put the observer(s) on an external site. If you don't have any, put it where the primary database is, and have one ready on the secondary site after the role transition.
Don't put the observer together with the standby database!
Configure multiple observers for high availability, and use the PreferredObserverHosts Data Guard member property to ensure you never run the observer where the standby database is.
Links:
The importance of Fast-Start Failover in an Oracle Data Guard configuration
Oracle 19c Data Guard Broker - Managing the Observer
Oracle 19c High Availability Overview and Best Practices - Configure Fast-Start Failover
----------------------------------------------
Copyright © 2022, Oracle and/or its affiliates.
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