QueryAnalyser is a product that will provide complete visibility of the usage of Query on any iSeries system. At a glance you will be able to see which queries are run most often, which ones run for the longest time and for which queries performance could be improved by the creation of an access path.
Should you wish to modify your queries, for example, if your library names have changed because of an upgrade to a new version of an ERP system, QueryAnalyser will handle this, potentially saving many man hours of work.