Data load in the Production takes long time

Question

Hi All,
We have load which is extracting data from 0HR_PA_0 Data Source. It is loading daily some 2 lacs 30thousand records.But it was taking lots of time to load around 3 hrs.So if we check in the joblog of the source system the job is active for a longer time and i can see there are no enhancements done for the data source.So is there any body who can throw light on this.The processing type is psa and data targets in serial. If we change to PSa and datatargets parallel is there any improvement in the load?
Thanks

Answer 1

You have told that you have enhancement in the data source.. in ABAP make sure below optimizations are met
Below things we need to keep in our mind:
1)       Try not use SELECT statement inside WHILE loop
2)       Use WHILE <logic> ASSIGNING <FS> instead of Use WHILE <logic> INTO WA.
3)       We should not take all table in work area instead we will use proper where clause in select statement to minimize load in memory.
4)       While reading Internal table use BINARY SEARCH as much as possible.
Above guideline also applies for Start routines.
Cheers,
DK
(Giving points is another way to say thanks:))