My Oracle Support Banner

Drop Column Very Slow (Doc ID 1506125.1)

Last updated on DECEMBER 26, 2019

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.
***Checked for relevance on 09-Sep-2016***

Symptoms

Slow alter table drop column in 11.2 database.

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

 

  

Cause

To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!


In this Document
Symptoms
Cause
Solution


My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.