My Oracle Support Banner

How to Determine the Value Of UNDO_RETENTION Parameter to Avoid ORA-1555 (Doc ID 822411.1)

Last updated on JANUARY 30, 2022

Applies to:

Oracle Database - Enterprise Edition - Version and later
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.


The objective of this note  is to explain how to set UNDO_RETENTION parameter and to clarify how the error ORA-1555 could be generated due to wrong setting of UNDO_RETENTION parameter value.


To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!

In this Document

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.