As discussed in system performance, monitor disk activity, CPU and memory usage to determine whether the disk subsystems, processing speed or paging are limiting performance.

Using the example of storage space, the embedded Informix instance could be configured to monitor disk usage and add more storage when any DBspace consumes 80 percent of its allocated space.

Part 3 of this series focuses on the application layer as you move on to file systems, using various commands to monitor and tune your file systems and disk I/O subsystems.