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POOR PERFORMANCE WITH LOB INSERTS (Doc ID 978045.1)

Last updated on APRIL 09, 2020

Applies to:

Oracle Database - Enterprise Edition - Version 10.2.0.1 to 11.2.0.1.0 [Release 10.2 to 11.2]
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


Inserts into blob columns are intermittently performing poorly.
Generally, the inserts complete in a few milliseconds, but occasionally
take several seconds or even minutes to complete.

The top wait event during this time is "db file sequential read"

Cause

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In this Document
Symptoms
Cause
Solution
References


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