Hello Rick How many records satisfy the selection without referring to the hold_payment_flag? How many of those have the flag set to 'y'? Are your indexes bitmaps or regular?
Of the top of my head I will build bitmap indexes for all the fields, including hold_payment_flag. Yechiel Adar, Mehish Computer Services [EMAIL PROTECTED] > -----Original Message----- > From: [EMAIL PROTECTED] [SMTP:[EMAIL PROTECTED]] > Sent: Wed, March 20, 2002 3:58 PM > To: Multiple recipients of list ORACLE-L > Subject: More info on sql query running slow > > 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 > > > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.com > -- > Author: > INET: [EMAIL PROTECTED] > > Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 > San Diego, California -- Public Internet access / Mailing Lists > -------------------------------------------------------------------- > To REMOVE yourself from this mailing list, send an E-Mail message > to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in > the message BODY, include a line containing: UNSUB ORACLE-L > (or the name of mailing list you want to be removed from). You may > also send the HELP command for other information (like subscribing). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: =?iso-8859-8?Q?=E0=E3=F8_=E9=E7=E9=E0=EC?= INET: [EMAIL PROTECTED] Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
