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This script will list the top 10 segments in the database that have the most number of
physical reads against them.

set pagesize 200
setlinesize 120
col segment_name format a20
col owner format a10

select segment_name,object_type,total_physical_reads
from ( select owner||’.’||object_name as segment_name,object_type,
value as total_physical_reads
from v$segment_statistics
where statistic_name in (‘physical reads’)
order by total_physical_reads desc)
where rownum <=10;

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