IF: How to monitor Undo Tablespace Usage and the Free Space
Last updated on JULY 12, 2018
Applies to:Oracle Database - Enterprise Edition - Version 184.108.40.206 and later
Information in this document applies to any platform.
This document provides the various queries that can be used to monitor Undo space usage.
The Undo Space once allocated wont be deallocated to the OS, by default. But the space can be reused by other transactions once the UNDO_RETENION (or TUNED_UNDORETENTION period) is met.
Sign In with your My Oracle Support account
Don't have a My Oracle Support account? Click to get started
My Oracle Support provides customers with access to over a
Million Knowledge Articles and hundreds of Community platforms