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Oracle processes with high disk reads

Oracle Database Tips by Donald BurlesonNovember 3, 2015

Question:  I need a script to display all Oracle processes with high disk reads.

Answer:  First see my article on tuning disk I/O in Oracle. The following script will display session  processes in descending order of disk reads:

-- ***************************************
-- Processes with the most disk reads
-- **************************************

select

   p.spid,
   s.sid,
   s.process cli_process,
   s.status,t.disk_reads,
   s.last_call_et/3600 last_call_et_Hrs,
   s.action,
   s.program,
   lpad(t.sql_text,30)
from
   v$session s,
   v$sqlarea t,
   v$process p
where
   s.sql_address = t.address
and
   s.sql_hash_value = t.hash_value
and
   p.addr = s.paddr
-- and
--t.disk_reads > 10
order by
   t.disk_reads desc;

For more complete Oracle scripts see the see code depot for full Oracle scripts

 
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