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Mismatch Between Free Space Reported from DBA_DATA_FILES - DBA_SEGMENTS and DBA_FREE_SPACE (Doc ID 416744.1)

Last updated on FEBRUARY 01, 2022

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 9.2 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.


There is a mismatch between free space reported from DBA_DATA_FILES ,  DBA_SEGMENTS and DBA_FREE_SPACE:

For a given tablespace, DBA_DATA_FILES.sum(bytes) - DBA_SEGMENTS.sum (bytes) > DBA_FREE_SPACE.sum (bytes) :

27983872 is greater than  27918336

Which information is the correct one ?



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