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

(Doc ID 1321814.1)

Last updated on JUNE 06, 2017

Applies to:

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