RE: More info on sql query running slow

From: Stephane Faroult <sfaroult_at_oriolecorp.com>
Date: Wed, 20 Mar 2002 07:53:25 -0800
Message-ID: <F001.0042E882.20020320075325@fatcity.com>

('binary' encoding is not supported, stored as-is)
Rick,

  Curious to know how this would perform :

SELECT COUNT(a.phy_contract_id)

FROM	  accrued_and_paid a,
          (select phy_contract_id
           from phy_contracts
           where company_id = 16
           and   contract_type = 'IC') b
WHERE	  a.hold_payment_flag = 'Y'
AND	  b.phy_contract_id   = a.phy_contract_id;

>----- Original Message -----
>From: Rick_Cale_at_teamhealth.com
>To: Multiple recipients of list ORACLE-L
><ORACLE-L_at_fatcity.com>
>Sent: Wed, 20 Mar 2002 05:58:25
>
>Hi All,
>Oracle 8.1.6
>
>I have 2 tables which have been analyzed. The query
>takes about 30+ seconds
>to run. If I run it many times it is faster as
>data gets loaded into
>buffer
>cache. I want to optimize when that is not the
>case. All the fields in the
>query have a separate index created EXCEPT for
>ACCRUED_AND_PAID.hold_payment_flag.
>
>Phy_Contracts has 10,466 rows.
>Accrued_and_Paid has 820,919 rows.
>
>Here is output from explain plan
>
>SELECT STATEMENT Cost = 1382
> SORT AGGREGATE
> NESTED LOOPS
> TABLE ACCESS BY INDEX ROWID PHY_CONTRACTS
> INDEX RANGE SCAN PCON_CMPY_FK
> TABLE ACCESS BY INDEX ROWID ACCRUED_AND_PAID
> INDEX RANGE SCAN ADPD_PCON_FK
>
>Any ideas what I can do to speed this query.
>
>SELECT COUNT(a.phy_contract_id)
>FROM accrued_and_paid a, phy_contracts b
>WHERE a.hold_payment_flag = 'Y'
>AND b.phy_contract_id = a.phy_contract_id
>AND b.company_id = 16
>AND b.contract_type = 'IC';
>
>List of single column index on PHY_CONTRACTS
>INDEX_NAME COLUMN_NAME
>------------------------------
>---------------------
>PCON_CONTRACT_TYPE_IDX CONTRACT_TYPE
>PCON_CMPY_FK COMPANY_ID
>PCON_PK PHY_CONTRACT_ID
>
>List of single column index on ACCRUED_AND_PAID
>INDEX_NAME COLUMN_NAME
>------------------------------ ------------------
>ADPD_PCON_FK PHY_CONTRACT_ID
>
>
>Thanks
>Rick
>

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Author: Stephane Faroul
  INET: sfaroult_at_oriolecorp.com

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Received on Wed Mar 20 2002 - 09:53:25 CST