Cost Based Query

Question

i have removed the RULE hints and tried the below query in 2 different databases both same version(10g)
In one of the database query completed in 4hrs and in another database it completed in 3 days.
Both databases has similar data.
where i am doing wrong?
Any feeedbacks?
Any optimizer parameters needs to be set?
lect /*+ RULE */ 'PO_COMMITMENT' record_type,
b.org_id,
NULL invoice_number,
a.PO_NUMBER,
a.PO_REVISION,
a.RELEASE_NUMBER,
a.CREATION_DATE,
a.APPROVED_DATE,
b.NEED_BY_DATE,
b.PROMISED_DATE,
a.BUYER_NAME,
a.VENDOR_NAME,
a.PO_LINE,
replace(a.ITEM_DESCRIPTION, chr(10),' ') item_description,
a.QUANTITY_ORDERED,
a.AMOUNT_ORDERED,
a.QUANTITY_CANCELLED,
a.AMOUNT_CANCELLED,
a.QUANTITY_DELIVERED,
a.AMOUNT_DELIVERED,
a.QUANTITY_INVOICED ,
a.AMOUNT_INVOICED*nvl(pod.rate,1) AMOUNT_INVOICED,
a.Amount_outstanding_invoice,
a.PROJECT_ID,
a.TASK_ID,
a.EXPENDITURE_ITEM_DATE,
a.ACCT_EXCHANGE_RATE,
a.denom_CURRENCY_CODE,
a.PO_HEADER_ID,
a.PO_RELEASE_ID,
pod.po_line_id REQUISITION_HEADER_ID,
a.po_line_location_id REQUISITION_LINE_ID ,
pod.po_distribution_id invoice_id,
EXPENDITURE_ORGANIZATION ,
null po_status,
pod.accrue_on_receipt_flag po_line_status,
null requisioner_name,
0 commitment_amt,
pod.po_header_id xpo_header_id,
pod.po_distribution_id xpo_distribution_id,
pod.distribution_num DISTRIBUTION_LINE_NUMBER
from pa_proj_appr_po_distributions a,
po_distributions pod,
po_line_locations b
where a.PO_LINE_LOCATION_ID = b.LINE_LOCATION_ID
and a.po_distribution_id = pod.po_distribution_id
and b.line_location_id = pod.line_location_id
and b.org_id = :p_org_id
and a.project_id > 0
UNION ALL
SELECT /*+ RULE */ 'REQ_COMMITMENT' ,
:p_org_id,
NULL,
REQ_NUMBER ,
NULL ,
NULL,
CREATION_DATE ,
to_date(null),
NEED_BY_DATE ,
to_date(null),
null,
vendor_name,
REQ_LINE ,
replace(ITEM_DESCRIPTION, chr(10), ' '),
QUANTITY ,
AMOUNT ,
0,
0,
0,
0,
0,
0,
0,
PROJECT_ID ,
TASK_ID ,
EXPENDITURE_ITEM_DATE ,
ACCT_EXCHANGE_RATE ,
denom_CURRENCY_CODE,
0,
0,
REQUISITION_HEADER_ID,
REQUISITION_LINE_ID ,
0 invoice_id,
EXPENDITURE_ORGANIZATION ,
null po_status,
null po_line_status,
REQUESTOR_NAME requisioner_name,
AMOUNT ,
0,
0,
0 DISTRIBUTION_LINE_NUMBER
FROM pa_proj_appr_req_distributions
union all
select /*+ RULE */ 'INVOICE_COMMITMENT' ,
:p_org_id,
b.INVOICE_NUM,
NULL,
NULL,
NULL,
b.creation_date,
a.INVOICE_DATE,
a.GL_DATE ,
to_date(null),
NULL,
a.VENDOR_NAME,
0,
replace(a.DESCRIPTION,chr(10),' '),
0,
0,
0,
0,
0,
0,
a.QUANTITY,
a.AMOUNT ,
0,
a.PROJECT_ID ,
a.TASK_ID ,
a.EXPENDITURE_ITEM_DATE ,
a.ACCT_EXCHANGE_RATE ,
a.denom_CURRENCY_CODE ,
0,
0,
aid.po_distribution_id,
aid.invoice_distribution_id,
a.invoice_id,
a.EXPENDITURE_ORGANIZATION ,
null,
null,
null,
a.amount ,
0,
0,
a.DISTRIBUTION_LINE_NUMBER
FROM
pa_proj_ap_inv_distributions a,
ap_invoices b,
ap_invoice_distributions aid
where a.invoice_id = b.invoice_id
and aid.invoice_id = b.invoice_id
and a.distribution_line_number = aid.distribution_line_number

Answer 1

Hello,
It's duplicate post, please close this and provide requested information in your previous post.
Regards