Hi expert,
loading from write-optimized DSO to infocube is very slow. I trace the loading process by ST05. a lot of following select statements take up most of the time, which have different variable values. in the corresponding loading monitor, step 'Conversion of Characteristic Values to SIDs' take up most of the time.
I review a lot of threads in this forum, and perform following checks :
(1) SAP_INFOCUBE_DESIGNS, no issue
(2) master data are already loaded before this loading, so no issue with SID.
(3) even though there is no Number Range Buffering, but this is same true for another system , which don't have loading issue for this case. so I don't think Number Range Buffering will resolve this loading issue.
(4) we have 4120972 rows in table /BIC/PZASSET, which have same index as another system . another system does not have this loading issue. so I don't think index is the reason of this issue.
(5) for DTP setting, parallel processes is 10 and job class is 'A'
(6) index for infocube has been removed before loading
(7) this issue loading is the third time loading for this infocube, so I suppose most SID are already in SID table. so no time wasted to create SID while loading
I am wondering what system want to do with following select statement while perform step 'Conversion of Characteristic Values to SIDs' in the loading?
SELECT
"VERSION", "/BIC/ZASSET", "/BIC/ZAASTN", "/BIC/ZAAFEEDER"
FROM
"/BIC/PZASSET"
WHERE
"VERSION"=:A0 AND "/BIC/ZASSET"=:A1 AND "OBJVERS"=:A2 OR "VERSION"=:A3 AND
"/BIC/ZASSET"=:A4 AND "OBJVERS"=:A5 OR "VERSION"=:A6 AND "/BIC/ZASSET"=:A7
AND "OBJVERS"=:A8 OR "VERSION"=:A9 AND "/BIC/ZASSET"=:A10 AND "OBJVERS"=:A11
OR "VERSION"=:A12 AND "/BIC/ZASSET"=:A13 AND "OBJVERS"=:A14
Many Thanks,
Andy