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Instance Terminates With ORA-07445 [ktundo] Errors From SMON Process (Doc ID 2736978.1)

Last updated on MARCH 12, 2021

Applies to:

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

Symptoms

Instances began crashing on RDBMS version 12.1.0.2 with ORA-7445 [ktundo] errors from the SMON process following transaction cleanup issues, e.g.


The instance or instances (if RAC) may stay up only a few minutes or a few hours, but eventually crash with the same errors again.

Cause

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In this Document
Symptoms
Cause
Solution
References


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