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Troubleshooting ORA-494 Errors (Doc ID 1915481.1)

Last updated on APRIL 03, 2024

Applies to:

Oracle Database - Enterprise Edition - Version and later
Oracle Database Cloud Schema Service - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database 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.


 This note aims to explain how to troubleshoot the error ORA-494 which would probably cause an instance crash.


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In this Document
 Why was this error reported?
 How to know what was the blocking process waiting for?
 Could killing the blocker be avoided?

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