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Failover To Alternate Destination Does Not Work With FAR SYNC (Doc ID 1939927.1)

Last updated on APRIL 03, 2020

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 12.1]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata 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.


Far Sync site has been configured with 12g Data Guard environment using physical standby.

Also, alternate' destination per documentation has been configured.

  Oracle® Data Guard Concepts and Administration
  12c Release 1 (12.1)
  Chapter 5 'Far Sync'
  section 5.1 'Creating a Far Sync Instance'
  sub-section 5.1.2 'Configuring an ALTERNATE Destination'

If FAR SYNC standby is disabled (instance and/or listener shutdown), the physical standby is not receiving redo stream via alternate destination and the redo are not applied in real-time mode.

The primary alert.log just shows repeated attempts to connect to FAR SYNC standby which fail with Oracle Net errors depending on what is down (instance or listener).


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