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Exadata: Severe Database Performance Issues After A Flash Disk Failure (Doc ID 2217767.1)

Last updated on FEBRUARY 21, 2019

Applies to:

Oracle Exadata Storage Server Software - Version 12.1.2.1.0 to 12.1.2.3.3 [Release 12.1]
Information in this document applies to any platform.

Symptoms

Customer may experience severe database performance problem after a flash disk failure. We would see from the Exawatcher data and metrics collected from the cell where the flash failure occurred, that a significant amount of the IOs are skipping the flashcache and hitting the HDDs directly.

 

 

 

Changes

 

Cause

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