Video: 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.

 

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Ludovico

Principal Product Manager at Oracle
Ludovico is a member of the Oracle Database High Availability (HA), Scalability & Maximum Availability Architecture (MAA) Product Management team in Oracle. He focuses on Oracle Data Guard, Flashback technologies, and Cloud MAA.

3 thoughts on “Video: Where should I put the Observer in a Fast-Start Failover configuration?”

  1. Hi Ludo,
    I’ve setup FSFO with 2 observers.
    I’ve set PreferredObserverHosts as explained.
    Initially i have one observer marked is Master (on the “primary site”).

    Once i swithover, i’m expecting the Backup observer to become the master observer on the side of the “new primary”.

    Is this assumption incorrect? Or am i missing something with my setup?

    Reply ↓

    • Hi Jonieta, That should be the case!
      Can you share the configuration? Maybe you can ping me via LinkedIn or email so you don’t have to publish it here 🙂

      Reply ↓

  2. Pingback: Pre-Christmas Blog – Oracle Analytics by Adrian Ward

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