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Constraints Impacting Streams Apply Processing When parallelism > 1 (Doc ID 1106453.1)

Last updated on JANUARY 11, 2023

Applies to:

Oracle Database - Enterprise Edition - Version 11.1.0.7 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.

Symptoms

Apply processing with parallelism > 1 is impacted by the constraints defined
between parent and child tables.

Foreign key constraints defined on destination database can cause Parallel Apply Servers to go in
  "waiting for dependency" state resulting in increased APPLY latency. 

When foreign keys on the destination database are removed, all apply servers work normally.

Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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