Query for Top 10 by Buffer Gets:


set linesize 100
set pagesize 100
SELECT * FROM
(SELECT substr(sql_text,1,40) sql,
        buffer_gets, executions, buffer_gets/executions "Gets/Exec",
        hash_value,address
   FROM V$SQLAREA
  WHERE buffer_gets > 10000
 ORDER BY buffer_gets DESC)
WHERE rownum <=10
;

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