Performance Tuning Siebel Software on the Sun Platform

ORAPERF.S_PRI_LST T4
WHERE
T4.PAYMENT_TERM_ID = T2.ROW_ID (+)
AND
T1.BU_ID = :V1
AND
T4.ROW_ID = T1.PRI_LST_ID
AND
T1.BU_ID = T3.ROW_ID
AND
((T1.PRI_LST_SUBTYPE_CD != 'COST LIST'
AND
T1.PRI_LST_SUBTYPE_CD != 'RATE LIST')
AND
(T4.EFF_START_DT = TO_DATE(:V3,'MM/DD/YYYY HH24:MI:SS'))
AND
T1.PRI_LST_NAME LIKE :V4
AND
T4.CURCY_CD = :V5))
ORDER BY T1.BU_ID, T1.PRI_LST_NAME;
Executing plan and statistics before the new index was added:
Execution Plan
----------------------------------------------------------
0 SELECT STATEMENT Optimizer=RULE
1 0 NESTED LOOPS (OUTER)
2 1 NESTED LOOPS
3 2 NESTED LOOPS
4 3 TABLE ACCESS (BY INDEX ROWID) OF 'S_PRI_LST_BU'
5 4 INDEX (RANGE SCAN) OF 'S_PRI_LST_BU_M1' (NON-UNIQUE)
6 3 TABLE ACCESS (BY INDEX ROWID) OF 'S_PRI_LST'
7 6 INDEX (UNIQUE SCAN) OF 'S_PRI_LST_P1' (UNIQUE)
8 2 INDEX (UNIQUE SCAN) OF 'S_PARTY_P1' (UNIQUE)
9 1 TABLE ACCESS (BY INDEX ROWID) OF 'S_PAYMENT_TERM'
10 9 INDEX (UNIQUE SCAN) OF 'S_PAYMENT_TERM_P1' (UNIQUE)
Statistics
----------------------------------------------------------
364 recursive calls
1 db block gets
41755 consistent gets
0 physical reads
0 redo size
754550 bytes sent via SQL*Net to client
27817 bytes received via SQL*Net from client
341 SQL*Net roundtrips to/from client
4 sorts (memory)
0 sorts (disk)
5093 rows processed
New Index created
create index S_PRI_LST_X2 on S_PRI_LST
(CURCY_CD, EFF_END_DT, EFF_START_DT)
STORAGE(INITIAL 512K NEXT 512K
MINEXTENTS 1 MAXEXTENTS UNLIMITED PCTINCREASE 0 FREELISTS 7 FREELIST
GROUPS 7 BUFFER_POOL DEFAULT) TABLESPACE INDX NOLOGGING PARALLEL 4 ;
As shown from the difference in statistics, the new index caused consistent reads to
reduce by about 100%.
<strong>Performance</strong> <strong>Tuning</strong> <strong>Siebel</strong> <strong>Software</strong> on the Sun Platform Page 51