Re: Program Performance

[Joep Beckeringh <joep@xxxxxxxxxxxxxxxxxxx>]

Muralidhar,

There are all sorts of reasons to prefer SQL over native access, but performance 
is normally not one of them (unless you're doing mass updates or mass deletes). 
SQL was made to operate on sets, RPG was made to operate on records. 
Sequentially processing a file is what RPG was made for.

So the question is: why are you using SQL? My guess is that in your scenario a 
pure RPG solution will outperform the SQL solution.

Joep Beckeringh


Muralidhar Narayana wrote:
> I have a program(of type SQLRPGLE) which  reads IPXPMPX1 sequentially and for every record in IPXPMPX1, it goes to IPX.FTMS, IPXPCDF1(outputfile) and IPX.MAS for populating the different fields in the outfile.
>  
> The  number of records in these files are as follows:
> IPX.FTMS(3190 records)
> IPXPMPX1(728,099 records)
> IPX.MAS(445 records)
> IPXPCDF1(105560 records)
>  
> The program due to  more number of records , is taking more time around 2 hours.This program is not very fancy,0 normal read and write opcodes & with some bounded SQL statements.
> I would like to check is there anyway I can increase the performance of the program and reduce the time it takes to run.
> Thanks so much for your ideas.
>
>
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