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Drop Column Very Slow (Doc ID 1506125.1)

Last updated on FEBRUARY 03, 2022

Applies to:

Oracle 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 Exadata Express Cloud Service - Version N/A and later
Oracle Database Backup Service - Version N/A and later
Information in this document applies to any platform.Symptoms

Slow alter table drop column in 11.2 database.

10046 (sql_trace) shows a background query responsible for the slow , similar to :

 

  

Cause

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In this Document
Symptoms
Cause
Solution


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