Tuning the query..

Question

Hi guys,
I have written a demand view query which is working perfectly and is giving demand betnwen specified date range. Can you suggest any modification in the query which will tune it to run faster and improve performance:
--Demand View query
--Data to use
--date: give any date range for this month
SELECT calendar_date,man_days_demand,/*total_fsr_count,*/
(total_fsr_count - MAN_DAYS_DEMAND) man_days_unstaffed,
/*FSR_Assigned_Serv_Req , FSR_Assigned_OT_Req ,*/
(total_fsr_count-(FSR_Assigned_Serv_Req + FSR_Assigned_OT_Req)) Man_days_avail
FROM (
SELECT TRUNC(cal.calendar_date) calendar_date,
(-- in line column qry to count the service reqs falling on that specific day
SELECT nvl(sum(count(ssrj.assigned_field_service_rep)),0)
FROM sop_service_request_job ssrj, sop_service_request ssr
WHERE (((cal.calendar_date between ssrj.scheduled_start_date AND
get_end_date(ssrj.scheduled_start_date,
ssrj.expected_service_hours,
ssrj.weekend)))
OR
(cal.calendar_date < ssrj.scheduled_start_date and
cal.calendar_date > get_end_date(ssrj.scheduled_start_date,
ssrj.expected_service_hours,
ssrj.weekend)))
and ssrj.service_request_id = ssr.service_request_id
and ssrj.assigned_field_service_rep is not null
GROUP BY calendar_date
) Man_Days_demand,
SELECT nvl(sum(count(ssrj.assigned_field_service_rep)),0)
FROM sop_service_request_job ssrj, sop_service_request ssr
WHERE (((cal.calendar_date between ssrj.scheduled_start_date AND
get_end_date(ssrj.scheduled_start_date,
ssrj.expected_service_hours,
ssrj.weekend)))
OR
(cal.calendar_date < ssrj.scheduled_start_date and
cal.calendar_date > get_end_date(ssrj.scheduled_start_date,
ssrj.expected_service_hours,
ssrj.weekend)))
and ssrj.service_request_id = ssr.service_request_id
and ssrj.assigned_field_service_rep is not null
and ssrj.job_status = 'ASSIGNED'
GROUP BY calendar_date
) FSR_Assigned_Serv_Req,
select nvl(sum(count(fsr_sso_id)),0)
from sop_other_time_alloc_det sotad
where ((cal.calendar_date between trunc(sotad.start_date) AND
trunc(sotad.end_date)) OR
(cal.calendar_date < trunc(sotad.start_date) AND
cal.calendar_date > trunc(sotad.end_date)))
GROUP BY calendar_date
) FSR_Assigned_OT_Req,
select nvl(count(distinct sso_id),0)
from sop_user_map
where role_id = 1
) total_fsr_count
FROM sop_fiscal_calendar_v cal, sop_service_user ssu, sop_service_request ssr,
sop_service_request_job ssrj, CSA_PLATFORM_MASTER cpm
WHERE
calendar_date BETWEEN trunc(to_date('&date_range_start_date','mm/dd/yyyy'))
AND trunc(to_date('&date_range_end_date','mm/dd/yyyy'))
and ssu.sso_id = ssrj.assigned_field_service_rep
and ssrj.service_request_id = ssr.service_request_id
and trim(ssu.sso_id) = trim('&ssoid')
and upper(ssu.qualification) like upper('%&qualification%')
and upper(cpm.platform_name) like upper('%&platform_name%')
and upper(ssu.country) like upper('%&country%')
and upper(ssr.region_id) like upper('%&region_id')
and upper(ssrj.weekend) like upper('%&weekend%')
and upper(ssu.state) like upper('%&state%')
GROUP BY calendar_date
) order by calendar_date
Thx,,
JP

Answer 1

Hello
To preserve the formatting any text you post you need surround them with the UBB Code tags [pre] and [/pre]. i.e.
[pre]
SQL> select * from dual;
D
X
Execution Plan
   0      SELECT STATEMENT Optimizer=CHOOSE
   1    0   TABLE ACCESS (FULL) OF 'DUAL'
Statistics
          0  recursive calls
          4  db block gets
          1  consistent gets
          0  physical reads
          0  redo size
        544  bytes sent via SQL*Net to client
        643  bytes received via SQL*Net from client
          4  SQL*Net roundtrips to/from client
          1  sorts (memory)
          0  sorts (disk)
          1  rows processed
[/pre]
HTH
David