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Oracle 12.2 - Simplified OBSERVER Management for Multiple Fast-Start Failover Configurations (Doc ID 2285891.1)

Last updated on MAY 16, 2023

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 12.2]
Oracle Database Cloud Schema Service - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Backup Service - Version N/A and later
Information in this document applies to any platform.


NOTE: In the images and/or the document content below, the user information and environment data used represents fictitious data from the
Oracle sample schema(s), Public Documentation delivered with an Oracle database product or other training material. Any similarity to actual
environments, actual persons, living or dead, is purely coincidental and not intended in any manner.

For the purposes of this document, the following fictitious environment is used as an example to describe the procedure:

Primary Database Name: PROD, ORA122
Standby Db Unique Name: PSTDBY,STBY122


Simplified observer management :- One command to manage multiple observers on different FSFO configuration. Separate observers are must to manage each FSFO configuration but the management of Observers are done in a group via single dgmgrl prompt. Users can either manage the observer separately like pre 12.2 case or manage observers in a group.


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In this Document
 Please also be aware about the following Bug which is in 12.2.

For this feature we need ensure the below fix is in place

1. Check what connect string observer using to connect to Primary and target standby
   1.1 DG configuration - I
     1.1.a. Primary configuration
     1.1.b. Standby configuration
   1.2 DG configuration - II
     1.2.a Primary configuration
     1.2.b Standby configuration
 3. Configure Wallet from the OBSERVER host
   3.1 Create wallet Key
   3.2 Make entry in SQLNET
   3.3 Reload all the listeners on all DG configuration.
 4. Create ObserverConfigFile
 5. Connect to dgmgrl and start the observer(s)
   5.1 From observer host
   5.2 Start the observer(s) for two DG broker configurations
   5.3 Check the OBSERVERs status
 6. Troubleshooting
  6.1. OBSERVER status shows UNKNOWN
   6.2. Starting OBSERVER failing with ORA-01017

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