Segment Advisor Reporting Incorrect Reclaimable Space For An Index (Doc ID 812985.1)

Last updated on DECEMBER 06, 2016

Applies to:

Enterprise Manager for RDBMS - Version: 10.2.0.1 to 10.2.0.4
This problem can occur on any platform.

Symptoms

DBA_EXTENTS and DBA_SEGMENTS both reporting that the index size is smaller than the Reclaimable Space reported by the Segment Advisor for that index.

Example:

SELECT SUM((BYTES) / 1024 /1024) Megs FROM DBA_EXTENTS WHERE SEGMENT_NAME ='<index_name>';

MEGS
----------
288

select sum(bytes)/1048576 Megs, sum(blocks) from dba_segments where
segment_name='<index_name>';


MEGS SUM(BLOCKS)
---------- -----------
288 73728

Output in Segment Advisor:

Cause

Sign In with your My Oracle Support account

Don't have a My Oracle Support account? Click to get started

My Oracle Support provides customers with access to over a
Million Knowledge Articles and hundreds of Community platforms