Query used in cursor:
DECLARE CURSOR2 CURSOR FOR
SELECT TDET_DET_PAR_NB R
,TDET_SYS_ID
,TDET_DR_CR_IND
,TDET_DET_AMT
,TDET_DIST_SETT _DTE
,TDET_FILE_ID_N BR
,TDET_CBAT_ID_N BR
,TDET_FILE_COL_ DTE
,TDET_FILE_SYS_ ID
,TDET_ACH_TRAN_ CD
,TDET_INDV_INFO _TXT
,TDET_DIST_ACCT _NBR
,TDET_ORIG_ACCT _NBR
,TDET_SEC_CD
,TDET_DET_PAR_D TE
,CBAT_HDR_CO_ID
FROM CH_P_TRANDET, CH_P_COLL_BTCH
WHERE TDET_DET_PAR_NB R = :TDET-DET-PAR-NBR
AND TDET_SYS_ID = :TDET-SYS-ID
AND TDET_DR_CR_IND = :TDET-DR-CR-IND
AND TDET_DET_AMT = :TDET-DET-AMT
AND TDET_DIST_SETT_ DTE >= :TDET-DIST-SETT-DTE
AND TDET_FILE_ID_NB R = CBAT_FILE_ID_NB R
AND TDET_CBAT_ID_NB R = CBAT_ID_NBR
AND TDET_FILE_COL_D TE = CBAT_FILE_COL_D TE
AND TDET_FILE_SYS_I D = CBAT_FILE_SYS_I D
AND TDET_FILE_TYPE_ CD = CBAT_FILE_TYPE_ CD
AND TDET_FILE_SYS_I D = CBAT_FILE_SYS_I D
AND CBAT_HDR_CO_ID = :CBAT-HDR-CO-ID
--> ORDER BY TDET_DIST_SETT_ DTE
FOR FETCH ONLY END-EXEC. "
INDEX DETAILS.
Table CH_P_TRANDET indexes:
X1CHTDET (UNIQUERULE R)
TDET_DET_PAR_NB R
TDET_SYS_ID
TDET_DET_PAR_DT E
X2CHTDET (UNIQUERULE U)
TDET_CBAT_ID_NB R
TDET_FILE_ID_NB R
TDET_FILE_COL_D TE
TDET_FILE_TYPE_ CD
TDET_FILE_SYS_I D
TDET_SYS_ID
TDET_DET_PAR_DT E
TDET_DET_PAR_NB R
TDET_EXCP_STAT_ CD
"Table CH_P_COLL_BTCH indexes:
X1CHCBAT (UNIQUERULE P)
CBAT_ID_NBR
CBAT_FILE_ID_NB R
CBAT_FILE_COL_D TE
CBAT_FILE_TYPE_ CD
CBAT_FILE_SYS_I D
X2CHCBAT (UNIQUERULE U)
CBAT_POINT_NME
CBAT_FILE_SYS_I D
CBAT_FILE_COL_D TE
CBAT_FILE_ID_NB R
CBAT_ID_NBR
CBAT_FILE_TYPE_ CD
CBAT_COLL_APPL_ ID
CBAT_COLL_TYPE_ CD
X3CHCBAT (UNIQUERULE U)
CBAT_HDR_CO_ID
CBAT_FILE_SYS_I D
CBAT_FILE_COL_D TE
CBAT_FILE_ID_NB R
CBAT_ID_NBR
CBAT_FILE_TYPE_ CD
CBAT_HDR_EFF_DT E
CBAT_SRCE_CD "
2  1768 
Difficult to do without some stats. It would appear that a 2-column matching index scan on X1CHTDET is the most probable access path with a nested loop join to CH_P_COLL_BTCH using X1CHCBAT.
Changing X1CHTDET and adding DR_CR_IND, TDET_DET_AMT and DET_DIST_SETT_D TE as the 3rd, 4th and 5th columns (before TDET_DET_PAR_DT E) would improve selectivity of the index but this may not be an option.
Ensure runstats has been run on the tables and indexes and run db2expln on this statement.
Thank you..i will come back with EXPLAIN report..Thank you for your reply..
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