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Fractured blocks found during crash or instance recovery when using EMC Symmetrix storage (Doc ID 758055.1)

Last updated on JANUARY 30, 2022

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 7.0 to 11.2]
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.


This note applies both to single instance and RAC.

In an Oracle and EMC Symmetrix storage environment, in some very extreme cases, if a node crashes due to a hard error, or there is a hardware error during a write, a surviving instance (in the case of RAC) or the same instance (in the case of single instance) may encounter Fractured Block errors upon crash/instance recovery attempts as follows: 




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