Oracle performance in Abap program

Dear Sirs,

I have an ABAP program that writte an Oracle Database using DBlink and using the following code.

l_prepstmt_ref->set_param_struct( l_dref ).

         l_prepstmt_ref->execute_update( ).

         CLEAR l_wa.

         COMMIT WORK.

We would like to improve the performance of the process and the database writting. What are the best practices to do this? And what about on Oracle side? Can we customize the database with some best practices?

Thank you and Best Regards

João Lages Fernandes