Cannot Drop Unused Columns Using DBMS_REDEFINITION Without PK And Compressed Table
(Doc ID 1233204.1)
Last updated on FEBRUARY 22, 2024
Applies to:
Oracle Database - Enterprise Edition - Version 11.2.0.1.0 and laterOracle 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 Cloud Exadata Service - Version N/A and later
Information in this document applies to any platform.
Updated to 16-Jan-2013.
Symptoms
It is not possible to drop the unused column when using table compression and
dbms_redefinition without a Primary Key, indeed, this is not dropped neither once that the alter
table statement completes successfully.
For example:
Cause
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In this Document
| Symptoms |
| Cause |
| Solution |
| References |