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  4. Script – Top SQL (Physical Reads)
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  2. Knowledge Base
  3. Scripts
  4. Script – Top SQL (Physical Reads)

Script – Top SQL (Physical Reads)

This script will list the top 5 SQL statements sorted by the most number of physical reads

set serverout on size 1000000
set feedback off
top5 number;
text1 varchar2(4000);
x number;
len1 number;
Cursor c1 is
select disk_reads,substr(sql_text,1,4000)
from v$sqlarea
order by disk_reads desc;
dbms_output.put_line('Reads'||' '||' Text');
dbms_output.put_line ('-----'||' '||'----------------------------------------------------');
dbms_output.put_line(' ');
open c1;
for i in 1 .. 5 loop
fetch c1 into top5, text1;
dbms_output.put_line(rpad(to_char(top5),9)|| ' '||substr(text1,1,66));
len1 :=length(text1);
x := 66;
while len1 > x-1 loop
dbms_output.put_line('" '||substr(text1,x,64));
x := x+64;
end loop;
end loop;

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Gavin Soorma

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Updated on June 2, 2021

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