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IF: Online Redefinition Tips And Tricks (Doc ID 2359350.1)

Last updated on AUGUST 23, 2021

Applies to:

Oracle Database Cloud Schema Service - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Oracle Database Cloud Exadata Service - Version N/A and later
Information in this document applies to any platform.


This document is intended for presenting some tips and tricks that may give primary assistance to Oracle Database Administrators, when it comes to the Online Redefinition context.


 The contents of this document may be useful for Oracle DBAs and/or Support Engineers.


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In this Document
 1. How Online Redefinition is useful?
 2. Primary Note
 3. Original table size
 4. Large Object (LOB) size
 5. Free space requirement
 6. Before attempting to redefine a table online
 7. What if an online redefinition fails?
 8. New features in 12.2

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