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Transient Corruption in OVM Linux - Reread finds a valid block version (Doc ID 1900359.1)

Last updated on FEBRUARY 20, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 11.1.0.6 to 12.1.0.2 [Release 11.1 to 12.1]
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 Cloud Exadata Service - Version N/A and later
Linux x86-64

Symptoms

Transient block corruption in Linux Oracle Virtual Machine (OVM) where a reread finds a VALID block.

Example for a RMAN backup of an archived log file showing a misplaced block corruption (block 4096 is read but OS returns block 392):

 

Note that the transient corruption is not limited to misplaced blocks and may be related to checksum errors, etc.

Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References

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