Query for Top 10 by Physical Reads:


set linesize 100
set pagesize 100
SELECT * FROM
(SELECT substr(sql_text,1,40) sql,
        disk_reads, executions, disk_reads/executions "Reads/Exec",
        hash_value,address
   FROM V$SQLAREA
  WHERE disk_reads > 1000
 ORDER BY disk_reads DESC)
WHERE rownum  <=10
;

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