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Tuned Undo Retention Grows Gradually In Local Undo Mode (Doc ID 2582191.1)

Last updated on SEPTEMBER 29, 2020

Applies to:

Oracle Database - Standard Edition - Version 12.2.0.1 and later
Oracle Database - Enterprise Edition - Version 12.2.0.1 and later
Information in this document applies to any platform.

Symptoms

When using 12c new feature Local Undo, Tuned Undoretention value gradually increases, regardless of the maxquerylen.

This may cause the undo tablespace size to extend to huge size, because the undo does not expire.

Example:

Cause

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In this Document
Symptoms
Cause
Solution
References


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