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Flashback Data Archive and Flashback Versions Query are not Parallelized In 11g causing slow query performance (Doc ID 2480653.1)

Last updated on MARCH 14, 2019

Applies to:

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

Symptoms

In our production system we have relatively big tables with up to 500 GB size and we therefore are in the need of acceptable performance for flashback versions queries on these tables.
In a 11.2.0.4 test database we can see that flashback versions query does not execute the full table scan on the FBDA enabled table in parallel whereas in a 12.2.0.1 database this FTS is executed in parallel.

Cause

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In this Document
Symptoms
Cause
Solution
References


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