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Drop Unused Columns Not Working Due to Compressed Partition (Doc ID 3063127.1)

Last updated on DECEMBER 11, 2024

Applies to:

Oracle Database - Enterprise Edition - Version 12.1.0.2 and later
Information in this document applies to any platform.

Symptoms

Encountered an issue where the command to drop unused columns was not functioning as expected.


Running the command alter table "TEST"."ABCD" drop column "SYS_C00044_24070908:58:49$"; resulted in the error "ORA-12999: cannot DROP or SET UNUSED a column that has been set unused".


The issue persisted even after attempting to use the DROP UNUSED COLUMNS option, leading to a deadlock situation.

Cause

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In this Document
Symptoms
Cause
Solution


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