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High Log File Sync Wait Due to LGWR with Slow io_submit() (Doc ID 2400987.1)

Last updated on NOVEMBER 07, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 11.2.0.4 to 11.2.0.4 [Release 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 Backup Service - Version N/A and later
Red Hat Advanced Server

Symptoms

NOTE: In the images and/or the document content below, the user information and data used represents fictitious data from the Oracle sample schema(s) or Public Documentation delivered with an Oracle database product. Any similarity to actual persons, living or dead, is purely coincidental and not intended in any manner.

 To get the errorrstack of LGWR, you may refer the doc below.  Both actions should be taken while the issue is happening..

How to Collect Errorstacks for use in Diagnosing Performance Issues. (Doc ID 1364257.1)
Steps to generate HANGANALYZE trace files (9i and below) (Doc ID 175006.1)

Changes

DB server has been moved to other data center.

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution


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