How to find Expensive SQL Statements? How to solve?
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Answer Posted / inder09
Using ST03N Choose the Standard Transaction Profile in
transaction ST03N and restrict the display to task type Dialog.
Sort the Average DB time (ms) column in descending order.
Transactions with high average DB request times might be
caused by expensive SQL statements.
Sort the Total Database Time column in ascending order. Then
Total this column. Transactions causing more than 5% of this
total database time are worth a closer look with respect to
tuning measures.
Sort the Total Response Time column in ascending order. Then
Total this column. Transactions causing more than 5% of this
total response time are worth a closer look with respect to
tuning measures.
Using the Database Monitor ST04
The quality of the database data buffer should be higher
than 90%.
Check the number of user calls compared to recursive calls.
There should be less recursive calls than user calls.
Check the Reads/User Call. If this value exceeds 30(blocks
read per user call) then this is a strong indicator for
expensive SQL statements
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