LOB segment size is significantly increasing despite of small actual size of data in it
(Doc ID 2326423.1)
Last updated on OCTOBER 19, 2020
Applies to:Oracle Database - Enterprise Edition - Version 18.104.22.168 to 22.214.171.124 [Release 12.1 to 12.2]
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 Backup Service - Version N/A and later
Information in this document applies to any platform.
+ A LOB segment is of size around few hundreds of GB when it is actually of around few hundred of MB only.
+ Also, 'enq: TX - contention' wait event is noticed in peak hours on the same LOB.
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