In many cases, even if problem threads are affecting MQSeries, it is not possible to shut down CICS or IMS immediately. Users have to live with the poor performance until the problem can be addressed. Dynamic tuning lets you resolve these resource-contention problems by giving you the ability to release just the resource causing the problem. For example, performance may be slow if you have MQSeries active logs on DASD with other data sets that have a lot of contention. Through dynamic tuning you can add new active logs on DASD that is not as busy.
Performance improves and log files remain safe and available.
Operations Issues Operations issues deal with giving you more control, or greater ability to make and effect decisions about MQSeries in real time. Many of the issues already addressed in this article have an operations component. Similar to the example of long-running threads degrading performance, another common problem in a MQSeries environment is when an application cannot run because another thread is consuming all available resources. In this case, dynamic tuning gives you real-time operational control over MQSeries by reducing the number of factors to consider when deciding to cancel the running thread or to not run the new application. If you decide to cancel the running thread, you can do so without affecting the underlying application.