My Oracle Support Banner

Cost-Based Join Predicate Push Down (JPPD) is not Happening In Presence Of Remote Database Link (DBLink) (Doc ID 3000669.1)

Last updated on FEBRUARY 05, 2024

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.4 and later
Information in this document applies to any platform.

Symptoms

Cost-Based JPPD is not happening to any of the non-mergeable views in scalar subqueries, when one of the scalar subquery has a reference to the remote Database Link (DBLink) object.

This prevents usage of index access on the join column inside the non-mergeable views.

  Testcase:

Changes

 

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
Changes
Cause
Solution
References


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