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After Upgrade From 12.1.0.2 To 18c or Above, Some Plans For Recursive Queries Change and Show Slow Performance (Doc ID 2926830.1)

Last updated on JULY 20, 2024

Applies to:

Oracle Database - Enterprise Edition - Version 18.3.0.0.0 and later
Information in this document applies to any platform.

Symptoms

In 18c and 19c SQLs that ran in seconds in 12.1.0.2 are now taking minutes to execute.

Changes

 Upgraded from 12.1.0.2 to 18c or higher

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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