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When to use DBMS_SPACE.UNUSED_SPACE or DBMS_SPACE.FREE_BLOCKS Procedures (Doc ID 116565.1)

Last updated on SEPTEMBER 29, 2023

Applies to:

Oracle Database Cloud Schema Service - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database 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
Oracle Database Cloud Service - Version N/A and later
Information in this document applies to any platform.

Purpose

DBMS_SPACE.UNUSED_SPACE and DBMS_SPACE.FREE_BLOCKS procedure names seem to provide redundant information about segments free space.

The document explains the purpose and the difference between the two procedures.

 

Scope

The information provided by one or the other procedure leads the DBAs towards different actions regarding reallocation and storage issues.

Details

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