Adaptive Server and its environment and applications can be broken into components, or tuning layers, to isolate certain components of the system for analysis. In many cases, two or more layers must be tuned so that they work optimally together.
In some cases, removing a resource bottleneck at one layer can reveal another problem area. On a more optimistic note, resolving one problem can sometimes alleviate other problems.
For example, if physical I/O rates are high for queries, and you add more memory to speed response time and increase your cache hit ratio, you may ease problems with disk contention.
The following information is on the tuning layers for Adaptive Server.