Saturday, March 24, 2012

PGA Top Consumer

set pagesize 1000
set lines 100
col sid format 9999
col username format a12
col module format a30
column pga_memory_mb format 9,999.99 heading "PGA MB"
column max_pga_memory_mb format 9,999.99 heading "PGA MAX|MB"
col service name format a20
col sql_text format a70 heading "Currently executing SQL"
set echo on

WITH pga AS
(SELECT sid,
ROUND(SUM(CASE name WHEN 'session pga memory'
THEN VALUE / 1048576 END),2) pga_memory_mb,
ROUND(SUM(CASE name WHEN 'session pga memory max'
THEN VALUE / 1048576 END),2) max_pga_memory_mb
FROM v$sesstat
JOIN v$statname USING (statistic#)
WHERE name IN ('session pga memory','session pga memory max' )
GROUP BY sid)
SELECT sid, username,s.module,
pga_memory_mb,
max_pga_memory_mb, substr(sql_text,1,70) sql_text
FROM v$session s
JOIN (SELECT sid, pga_memory_mb, max_pga_memory_mb,
RANK() OVER (ORDER BY pga_memory_mb DESC) pga_ranking
FROM pga)
USING (sid)
LEFT OUTER JOIN v$sql sql
ON (s.sql_id=sql.sql_id and s.sql_child_number=sql.child_number)
WHERE pga_ranking <=5
ORDER BY pga_ranking
/

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