提高abap数据访问性能的几篇文章的连接

Optimize Database Access and Increase System Performance Through More Efficient ABAP Programming

http://www.itp-consulting.com/Optimize%20Database%20and%20Performance%20with%20ABAP.pdf 

Dynamic Open SQL Coding in SAP

http://www.itp-consulting.com/dynamic%20SQL%20in%20SAP.pdf

 Efficient Database Programming with ABAP

http://fuller.mit.edu/tech/ABAP152_US.pdf#search=%22db_commit%20%22commit%20work%22%22