SLOW VIEW AND DUPLACITE IN SOM RECORDS

Question

Good evening
Iam created this view but make Doublicate or more for many records what is the problem:
CREATE OR REPLACE FORCE VIEW XXX_SINGLE_DATA
NAMEARFIRST,
NAMEARSECOND,
NAMEARTHIRD,
NAMEARFAMILY,
NAMEENFIRST,
NAMEENSECOND,
NAMEENTHIRD,
NAMEENFAMILY,
CV_NATIONAL_ID,
SEX,
EMAILS,
EMAIL2,
EMPLOOYID,
JOBTITLEAR,
IBANACCOUNT,
PHONES,
EXT,
MOBILE,
DEPARTMENT
AS
SELECT first_name namearfirst,
per_information1 namearsecond,
per_information2 namearthird,
last_name namearfamily,
PER_INFORMATION3 nameenfirst,
PER_INFORMATION4 nameensecond,
PER_INFORMATION5 nameenthird,
PER_INFORMATION6 nameenfamily,
national_identifier cv_national_id,
DECODE (a.sex, 'M', 1, 'F', 2, NULL) sex,
email_address emails,
a.attribute5 email2,
a.employee_number emplooyid,
ed.PERSON_TYPE jobtitlear,
ed.BANK_ACCOUNT ibanaccount,
xxx_get_static_phone (a.employee_number),
XXX_GET_PHONE_EXT (a.employee_number),
xxx_get_mobile (a.employee_number),
hd.name
FROM per_people_x a,
per_assignments_x b,
per_qualifications c,
per_time_periods d,
per_person_type_usages ppt,
per_grades e,
xxx_earns_deducts ed,
hr_organization_units hd,
pay_people_groups ppg
WHERE a.person_id = b.person_id
AND a.person_id = c.person_id(+)
AND TO_DATE (TO_CHAR (SYSDATE, 'dd/mm/yyyy'), 'dd/mm/yyyy') BETWEEN d.start_date
AND d.end_date
AND b.payroll_id = d.payroll_id
AND a.person_id = ppt.person_id
AND b.grade_id = e.grade_id
AND b.PAYROLL_ID = ed.PAYROLL_ID
AND a.employee_number = ed.employee_number
AND ed.time_period_id =
(SELECT MAX (time_period_id)
FROM xxx_earns_deducts
WHERE a.employee_number = ed.employee_number)
AND b.people_group_id = ppg.people_group_id
AND b.person_id = a.person_id
AND TO_NUMBER (ppg.segment2) = hd.organization_id(+)
ORDER BY TO_NUMBER (a.employee_number);
Iam Very thank you

Answer 1

Please post the details of the application release, database version and OS.
Do you have the statistics collected up to date?
Please generate the explain plan to find out why the query/view is slow.
Re: query performance
https://forums.oracle.com/forums/search.jspa?threadID=&q=SLOW+AND+Query&objID=c3&dateRange=all&userID=&numResults=15&rankBy=10001
Also, please fix the duplicate records issue first then check the performance of the view/query.
Thanks,
Hussein