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Select Query With Parallel Other Than 1 Is Hanging And Consuming All CPU in 12.2 And 18c (Doc ID 2572473.1)

Last updated on AUGUST 08, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 12.2.0.1 and later
HP-UX Itanium

Symptoms

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Platform : HP-UX Itanium

Table size is approx 1 GB. DOP set to 2 at table and index level.

Select query against the table is hanging without completion and consuming all CPU.

The query is hanging with any DOP like 2,4,6..etc .

Query will run fine in serial mode.i.e without parallelism.

Changes

Database upgrade from 12.1 to 12.2. 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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