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Set as converted Controlfile due to db_unique_name Mismatch Message in the ALERT.LOG after Rebuilding Standby Controlfile on Physical Standby (Doc ID 1530140.1)

Last updated on APRIL 03, 2020

Applies to:

Oracle Database - Enterprise Edition - Version and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Database Cloud Exadata 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:



Why are the following Messages in the Physical Standby Database ALERT.LOG ?

"Set as converted control file due to db_unique_name mismatch"
"Changing di2dbun from SITSDBA to SITSDBA_STBY"


Prior to seeing these Messages, Managed Recovery was stopped, and the Standby Controlfile was recreated from the Primary. The Standby was then mounted with the new Standby Controlfile.
Once Managed Recovery was started, the Messages appeared in the ALERT.LOG.


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