Oracle Active Session History

Within Oracle Enterprise Manager you did have an option to monitor your database top activities via a graphs. Oracle has renamed the "top activities" into Active Session History within the new release of Oracle Enterprise Manager. Also some enhancements are made to the new ASH in comparison with the "top activities" options.

The Active Session History for Oracle databases is providing you with a great tool to dive into the details of your database performance and will turn out to be a great tool to investigate user claims of bad performance. You can drill into all details for a certain moment in time to locate the reason for the bad performance of your database system.

In the below video you can get a quick overview of what the options are and this should give you a starting point to look for yourself in your own Oracle Enterprise Manager installation to find the added value of ASH.