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Underscore (Hidden) Parameters will not be retained after upgrade using DBUA (Doc ID 1321814.1)

Last updated on OCTOBER 02, 2019

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 9.2 to 12.2]
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.


After upgrading a database to 11gR2 or 12c using the Database Upgrade Assistant (DBUA), any underscore (hidden) parameters that were previously set will no longer be set.

DBUA does not show any warning messages that these parameters will be lost after the upgrade.


Upgrade the database to 11gR2 or 12c using DBUA


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