Time out error in production server for alv grid report

Question

hi. i have developed alv grid report using nested select statments. when i testing in development  server it is giving the output but in production server if i give 4 months then it is showing time out error.please help me out..its urgent.
Thanks in advance.

Answer 1

Hi Manu,
Don't use Nested selected statements.
Use the Following  Performance Tuning Options that i have given below so that your problem can be solved.
1)  Always check the driver internal tables is not empty, while using FOR ALL ENTRIES
2) Avoid for all entries in JOINS
3) Try to avoid joins and use FOR ALL ENTRIES.
4)   Try to restrict the joins to 1 level only ie only for tables
5)   Avoid using Select *.
6)   Avoid having multiple Selects from the same table in the same object.
7)  Try to minimize the number of variables to save memory.  
8)   The sequence of fields in 'where clause' must be as per primary/secondary index ( if any)
9)   Avoid creation of  index as far as possible
10) Avoid operators like  <>, > , < & like % in where clause conditions
11) Avoid select/select single statements in loops.
12) Try to use 'binary search' in READ internal table. Ensure table is sorted before using   BINARY SEARCH.
13) Avoid using aggregate functions  (SUM, MAX etc) in selects ( GROUP BY , HAVING,)  
14) Avoid using  ORDER  BY in selects
15) Avoid Nested Selects
16) Avoid Nested Loops of Internal Tables
17) Try  to  use FIELD SYMBOLS.
18) Try to avoid into Corresponding Fields of
19) Avoid using Select  Distinct, Use DELETE ADJACENT
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Regards
Babu