SQL Query With Same Execution Plan is Taking Longer After DB Upgrade - More I/O is Seen
(Doc ID 2872907.1)
Last updated on APRIL 17, 2023
Applies to:Oracle Database - Enterprise Edition - Version 126.96.36.199 and later
Information in this document applies to any platform.
After upgrading a Database from 12.1 to 19.11, it was noticed that a specific query is taking more time for execution in 19c.
- Execution plan is same across the two versions.
- However, the plan details show that more time is taken in 19c for the I/O:
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