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Steps to Modify the UNDO_RETENTION at PDB level on ADG(Active Data Guard) (Doc ID 2800413.1)

Last updated on APRIL 17, 2023

Applies to:

Oracle Database - Enterprise Edition - Version and later
Information in this document applies to any platform.


Changing parameter at the PDB level generates REDO , so the change cannot be done directly on the ADG due to its read only nature. UNDO_RETENTION changes must come from primary and the changes will get applied on ADG, once the REDO applied.

This requires PDB restart, after the REDO applied on ADG.

The article explains the steps to modify the UNDO_RETENTION at PDB level on Active Data Guard.


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