Why Is the Sql Running in Parallel?
(Doc ID 1627599.1)
Last updated on FEBRUARY 05, 2022
Applies to:
Oracle Database - Enterprise Edition - Version 11.2.0.4 to 12.2.0.1 [Release 11.2 to 12.2]Information in this document applies to any platform.
Goal
What is the reason for which a statement is executed in parallel even so all the conditions of having this in serial are met?
The degree for all the tables involved is set to 1
and
parallel_degree_limit CPU
parallel_degree_policy MANUAL
Much more even when setting:
ALTER SESSION DISABLE PARALLEL DML;
ALTER SESSION DISABLE PARALLEL DDL;
ALTER SESSION DISABLE PARALLEL QUERY;
the statement is still executed in parallel.
Solution
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In this Document
| Goal |
| Solution |
| References |