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ORA-04020: Deadlock Detected While Dropping Role (Doc ID 2415755.1)

Last updated on FEBRUARY 21, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 12.1.0.2 to 12.1.0.2 [Release 12.1]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud 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
Information in this document applies to any platform.

Symptoms

ora-04020: deadlock detected while dropping role, errorstack trace shows it is relevant to an object which assicoated with lots of external table.

Callstack contains "kkestExternalTabInfo" and "kketsd":

 

Cause

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In this Document
Symptoms
Cause
Solution
  
References


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