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Home -> Community -> Mailing Lists -> Oracle-L -> Select is fast, insert is very very slow
Hi List,
The below insert statement is taking about 5 minutes to insert around 74,000 records. I have altered the temp_segment_sr_filter table to nologging, increased the number of freelists to 2 and there are no indexes on the temp_segment_sr_filter table. The select statement takes only 250 ms to execute where as while inserting into the temp_segment_sr_filter it takes 5 minutes:
INSERT /*+ append */ INTO
TEMP_SEGMENT_SR_FILTER (FLIGHT_SCH_KEY, FLIGHT_SCH_TYPE, FLIGHT_NO,
FLIGHT_SGT_KEY, ORG_STN_KEY, DEST_STN_KEY, SERVICE_CODE, AC_TYPE_KEY,
POSITION_CODE)
SELECT
TDFS.FLIGHT_SCH_KEY,
TDFS.FLIGHT_SCH_TYPE,
FSH.FLIGHT_NO,
FSG.FLIGHT_SGT_KEY,
FSG.ORG_STN_KEY,
FSG.DEST_STN_KEY,
TOS.SERVICE_CODE,
FSG.AC_TYPE_KEY AS AC_TYPE_KEY,
POS.POSITION_CODE
FROM
TEMP_DAY_FLIGHT_SCHEDULE TDFS,
FLIGHT_SCHEDULE FSH,
FLIGHT_SGT FSG,
TEMP_OFP_SERVICE TOS,
POSITION POS
WHERE
TDFS.FLIGHT_SCH_KEY = FSH.FLIGHT_SCH_KEY
AND FSH.FLIGHT_SCH_KEY = FSG.FLIGHT_SCH_KEY
AND TOS.SERVICE_CODE <> '*'
AND POS.POSITION_CODE <> '*'
AND TDFS.FLIGHT_SCH_TYPE = 'F'
AND FSG.AC_TYPE_KEY <> 132
AND NOT EXISTS (
SELECT
/*+ index(SR i2_station_restriction) no_expand */
1
FROM
STATION_RESTRICTION SR,
STN_RSTCN_TO_FRM SRTF,
STN_RESTRICTION_SPL_CODE SRSC
WHERE
SR.STN_RSTCN_KEY = SRTF.STN_RSTCN_KEY
AND SR.STN_RSTCN_KEY = SRSC.STN_RSTCN_KEY (+)
AND SRSC.STN_RSTCN_KEY IS NULL
AND (SR.AC_TYPE_KEY = FSG.AC_TYPE_KEY OR
SR.AC_TYPE_KEY = 517 )
AND (
(
POS.POSITION_CODE IN ('E', 'TE')
AND (
(
SR.STN_KEY =
FSG.ORG_STN_KEY
AND ( (SRTF.STN_KEY =
FSG.DEST_STN_KEY) OR (SRTF.STN_KEY = 0) OR (SRTF.STN_KEY IS NULL AND
SRTF.COUNTRY_KEY = (SELECT COUNTRY_KEY FROM STATION WHERE STN_KEY =
FSG.DEST_STN_KEY)) )
AND SR.AIRLINE_KEY = (SELECT
AIRLINE_KEY FROM AIRLINE WHERE AIRLINE_CODE = SUBSTR(FSH.FLIGHT_NO, 1, 2) )
)
OR
(
SR.STN_KEY = 0
AND ( (SRTF.STN_KEY =
FSG.DEST_STN_KEY) OR (SRTF.STN_KEY = 0) OR (SRTF.STN_KEY IS NULL AND
SRTF.COUNTRY_KEY = (SELECT COUNTRY_KEY FROM STATION WHERE STN_KEY =
FSG.DEST_STN_KEY)) )
AND SR.AIRLINE_KEY IN (
(SELECT AIRLINE_KEY FROM AIRLINE WHERE AIRLINE_CODE = SUBSTR(FSH.FLIGHT_NO,
1, 2)) , 106 )
)
)
AND (SR.VALID_FROM <=
TRUNC(to_date('14-May-03'))+FSG.DEP_DAY_CHG AND SR.VALID_TO >=
TRUNC(to_date('14-May-03'))+FSG.DEP_DAY_CHG)
AND (SR.WEEKDAYS LIKE ('%' ||
DECODE(TO_CHAR(TRUNC(to_date('14-May-03'))+FSG.DEP_DAY_CHG, 'D'), '1', '7',
TO_NUMBER(TO_CHAR(TRUNC(to_date('14-May-03'))+FSG.DEP_DAY_CHG , 'D')) - 1 )
|| '%'))
)
OR
(
POS.POSITION_CODE IN ('I', 'TI')
AND (
(
SR.STN_KEY =
FSG.DEST_STN_KEY
AND ( (SRTF.STN_KEY =
FSG.ORG_STN_KEY) OR (SRTF.STN_KEY = 0) OR (SRTF.STN_KEY IS NULL AND
SRTF.COUNTRY_KEY = (SELECT COUNTRY_KEY FROM STATION WHERE STN_KEY =
FSG.ORG_STN_KEY)) )
AND SR.AIRLINE_KEY = (SELECT
AIRLINE_KEY FROM AIRLINE WHERE AIRLINE_CODE = SUBSTR(FSH.FLIGHT_NO, 1, 2) )
)
OR
(
SR.STN_KEY = 0
AND ( (SRTF.STN_KEY =
FSG.ORG_STN_KEY) OR (SRTF.STN_KEY = 0) OR (SRTF.STN_KEY IS NULL AND
SRTF.COUNTRY_KEY = (SELECT COUNTRY_KEY FROM STATION WHERE STN_KEY =
FSG.ORG_STN_KEY)) )
AND SR.AIRLINE_KEY IN
((SELECT AIRLINE_KEY FROM AIRLINE WHERE AIRLINE_CODE = SUBSTR(FSH.FLIGHT_NO,
1, 2)) , 106 )
)
)
AND (SR.VALID_FROM <=
TRUNC(to_date('14-May-03')) + FSG.ARR_DAY_CHG AND SR.VALID_TO >=
TRUNC(to_date('14-May-03')) + FSG.ARR_DAY_CHG )
AND (SR.WEEKDAYS LIKE ('%' ||
DECODE(TO_CHAR(TRUNC(to_date('14-May-03'))+FSG.ARR_DAY_CHG, 'D'), '1', '7',
TO_NUMBER(TO_CHAR(TRUNC(to_date('14-May-03'))+FSG.ARR_DAY_CHG, 'D')) - 1 )
|| '%'))
)
)
--AND (SR.WEEKDAYS LIKE '%3%')
AND (
(SR.RESTRICTED_POSITION = '*' AND
SR.SERVICE_KEY = 5 )
OR (SR.RESTRICTED_POSITION =
POS.POSITION_CODE AND SR.SERVICE_KEY = 5 )
OR (SR.RESTRICTED_POSITION = '*' AND
SR.SERVICE_KEY = TOS.SERVICE_KEY )
OR (SR.RESTRICTED_POSITION =
POS.POSITION_CODE AND SR.SERVICE_KEY = TOS.SERVICE_KEY )
)
AND IS_ALLOWED = 'N'
)
Can anybody help me in imporving the insert performance? Any help in this regard is very much appreciated.
Thanks and Regards,
Ranganath
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-- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Krishnaswamy, Ranganath INET: Ranganath.Krishnaswamy_at_blr.hpsglobal.com Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (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).Received on Thu May 15 2003 - 03:01:39 CDT
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