Systems, methods, and computer products that improve the performance of computer-implemented I/O operations for complex applications, such as a database, that are ported to target computer systems that are not tailored to support the high-performance services that may benefit applications. Complex applications, such as a database, often manage I/O access operations by a caching mechanism that is tailored to the needs of the application. When porting an application to a target computer system that does not support certain I/O access features, I/O performance of the application may be limited. The present invention may be implemented by introducing specialized I/O access features that are tailored to enhance I/O access performance for complex applications, such as a database.