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Explaining ORA-1555 Error (Doc ID 467872.1)

Last updated on FEBRUARY 19, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 9.0.1.0 to 12.1.0.1 [Release 9.0.1 to 12.1]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud 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
Information in this document applies to any platform.

Goal

A clear, step by step, method to diagnose an ORA-1555 issue using either

   UNDO_MANAGEMENT = AUTO ... Automatic Undo Management (AUM)

OR

   UNDO_MANAGEMENT = MANUAL ... Manual Undo (Rollback)

Solution

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In this Document
Goal
Solution
References

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