Database performance tuning can dramatically affect the throughput of your application. For example, if your application requires high concurrency (multiple, simultaneous interactions with backend data), an improperly tuned database can result in a bottleneck. Database access threads accumulate in a backlog when the database is not configured to accept a sufficient number of incoming requests.
Tuning parameters vary according to the type of database you are using. If you run DB2 UDB for iSeries, see DB2 Universal Database performance tips for more information.