High Direct Path Read On LOB Operation After 12.2 Upgrade
(Doc ID 2354518.1)
Last updated on FEBRUARY 22, 2019
Applies to:Oracle Database - Enterprise Edition - Version 220.127.116.11 and later
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 Cloud Exadata Service - Version N/A and later
Information in this document applies to any platform.
After upgrading DB from 18.104.22.168 to 22.214.171.124, dbms_lob.substr shows performance issue with lots of direct path read.
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