How to increase performances of a program??

What are the steps you follow to improve performances of programe?
What is the table related to SCHEDULE LINE AGREEMENTS IN SD??

Hi,
VBEH and VBEP are the tables for Schedule lines
1. To improve performance for programs...
Dont use into corresponding fields - use into table
Check the performance using the JOin and For all entries , then go on with good one
for comparision delete dupicate entries of checking table
Declare the table fileds as they appear in the db table position wise
try to get the max comparision fields and input parameters
Sort the int table and use read statement with binary search.
use a single loop to modify the itab based on read statement
and also chk this.
http://www.thespot4sap.com/Articles/SAPABAPPerformanceTuning_PerformanceAnalysisTools.asp
http://www.erpgenie.com/abap/performance.htm
http://www.sap-img.com/abap/performance-tuning-for-data-selection-statement.htm
https://www.sdn.sap.com/irj/sdn/wiki?path=/display/home/abapPerformanceand+Tuning&
http://help.sap.com/saphelp_nw2004s/helpdata/en/c6/617cafe68c11d2b2ab080009b43351/frameset.htm
http://help.sap.com/saphelp_nw2004s/helpdata/en/d1/801f7c454211d189710000e8322d00/frameset.htm
Hope it helps u...
Regards,
KK

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