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Queries Fail Intermittently With ORA-3170 On ADG (Doc ID 2311894.1)

Last updated on JULY 09, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 12.1.0.2 and later
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
Information in this document applies to any platform.

Symptoms

Alert log of  Active Data Guard databases report ORA-03170

  Mon Aug 15 14:00:05 2016
  Errors in file /<PATH>/trace/<FILE_NAME>.trc:
  ORA-03170: deadlocked on readable physical standby (undo segment 1161)
  Mon Aug 15 14:01:13 2016
  Errors in file /<PATH>/trace/<FILE_NAME>.trc:
  ORA-03170: deadlocked on readable physical standby (undo segment 1161)

Fix for Bug 21889720 - hitting ORA-3170 continuously on one standby node (Doc ID 21889720.8) was applied but issue still occurs.

Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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