Data Guard Broker Switchover fails With ORA-16665 using Active Data Guard
(Doc ID 1323789.1)
Last updated on AUGUST 23, 2023
Applies to:
Oracle Database Cloud Exadata Service - Version N/A and laterOracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Cloud Service - Version N/A and later
Oracle Database Backup Service - Version N/A and later
Oracle Database - Enterprise Edition - Version 11.1.0.6 to 12.1.0.2 [Release 11.1 to 12.1]
Information in this document applies to any platform.
Symptoms
There is a Data Guard Broker Configuration using Active Data Guard, ie. the Physical Standby Database is open READ ONLY while Log Transport Service (Managed Recovery) is active.
When trying to perform a Switchover using DGMGRL, this fails raising ORA-16665:
In the ALERT.LOGs and DRC.LOGs you can see that the Switchover itself completed, ie. the Primary Database has been switched into a Standby Database and the former Standby Database is now the Primary, but the Restart of the Databases to finally complete the Switchover does not happen.
Changes
Cause
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In this Document
| Symptoms |
| Changes |
| Cause |
| Solution |