Report is taking time to execute the following query

Question

Hi All,
I have one query using in reports6i,which i am describing down,its taking half an hour to execute.
I need to tune the query,if any one could help or any suggestions...........highly appreciable.
SELECT +ALL_ROWS
DISTINCT sm.orgn_code,
sm.sample_no,
-- DECODE (sm.batch_id, NULL, 'Item/Locn', 'Production') AS sample_type,
NVL2(sm.batch_id, 'Production', 'Item/Locn') AS sample_type,
sm.date_drawn,
su.user_name AS drawn_by,
im.item_no,
lm.lot_no,
im.inv_type,
qt.test_code,
rm.user_name AS result_by,
rm.result_date,
qt.test_type,
qv.min_value_num,
qv.max_value_num,
DECODE(qt.test_type, 'N', TO_CHAR(qv.min_value_num) || ' - ' || TO_CHAR(qv.max_value_num), NULL) AS the_range,
DECODE(qt.test_type, 'N', TO_CHAR(qv.target_value_num), qv.target_value_char) AS the_spec,
DECODE(qt.test_type, 'N', TO_CHAR(rm.result_value_num), rm.result_value_char) AS the_result,
DECODE(qt.test_unit, 'N/A', NULL, qt.test_unit) AS qc_uom,
DECODE(sm.sample_disposition,
'0RT',
'RETAIN',
'1P',
'PENDING',
'2I',
'IN PROGRESS',
'3C',
'COMPLETE',
'4A',
'ACCEPT',
'5AV',
'ACCEPT WITH VARIANCE',
'6RJ',
'REJECT',
'7CN',
'CANCEL',
NULL) AS disposition
FROM gmd.gmd_samples sm,
-- gmd.gmd_results rm,
gmd.gmd_qc_tests_b qt,
gmd.gmd_specifications_b sp,
gmd.gmd_spec_tests_b qv,
gmi.ic_lots_mst lm,
apps.ic_item_mst im,
applsys.fnd_user su,
(SELECT gr.result_date,
gr.sample_id,
gr.test_id,
gr.result_value_num,
gr.result_value_char,
ru.user_name
FROM gmd_results gr,
applsys.fnd_user ru
WHERE (to_date(to_char(gr.result_date,'mm/dd/yyyy'),'mm/dd/yyyy') BETWEEN
to_date(to_char(:p_2_start_date,'mm/dd/yyyy'),'mm/dd/yyyy') AND
to_date(to_char(:p_3_end_date,'mm/dd/yyyy'),'mm/dd/yyyy'))
AND gr.result_date IS NOT NULL
AND ru.user_id = gr.last_updated_by) rm
WHERE 1 = 1 --rm.result_date IS NOT NULL
-- AND TO_DATE (TO_CHAR (rm.result_date, 'mm/dd/yyyy'), 'mm/dd/yyyy') >=TO_DATE (TO_CHAR (:p_2_start_date, 'mm/dd/yyyy'), 'mm/dd/yyyy')
-- AND TO_DATE (TO_CHAR (rm.result_date, 'mm/dd/yyyy'), 'mm/dd/yyyy') <=TO_DATE (TO_CHAR (:p_3_end_date, 'mm/dd/yyyy'), 'mm/dd/yyyy')
AND im.inv_type = NVL (UPPER (:p_inv_type), im.inv_type)
AND sm.orgn_code = UPPER (:p_1_orgn)
AND sm.item_id = lm.item_id --double
AND sm.lot_id = lm.lot_id
AND sm.item_id = lm.item_id --double
AND sm.item_id = im.item_id
AND sp.item_id = im.item_id
AND rm.sample_id = sm.sample_id
AND su.user_id = sm.sampler_id
-- AND ru.user_id = rm.last_updated_by
AND rm.test_id = qt.test_id
AND qt.test_id = qv.test_id
AND qv.spec_id = sp.spec_id
AND sp.spec_status = 700
AND qt.test_code LIKE NVL(:p_test, '%')
AND ( ( qt.test_type = 'N'
AND ( rm.result_value_num < qv.min_value_num
OR rm.result_value_num > qv.max_value_num))
OR ( qt.test_type <> 'N'
AND rm.result_value_char <> 'OK'
AND rm.result_value_char <> qv.target_value_char)
Thanks in Advance

Answer 1

You may want to consider demoralization views/tables or create indexes etc. to improve performance. Post it to
PL/SQL
to get more and quicker responses.