The Tables tab on the Buffer Pools drilldown shows a list of the tables that use the selected buffer pool. The list provides the following information for each table in a grid format. Since you can choose to hide, display, or rearrange any column in the grid, some columns below might not display in your current list view, or be in the order in which they are listed here.
The Tablespaces tab on the Buffer Pools drilldown breaks down the activity for the selected buffer pool by each tablespace associated with the buffer pool. The tab shows a list of these tablespaces and provides the following information about each in a grid format. Since you can choose to hide, display, or rearrange any column in the grid, some columns below might not display in your current list view, or be in the order in which they are listed here.
Welcome to Spotlight on IBM DB2 LUW (Linux, Unix, and Windows). The help topics in this book cover features available in the interface when Spotlight is connected to a version 9 database.
Spotlight is a powerful database monitoring and diagnostic tool. Its unique user interface provides you with an intuitive, visual representation of the activity on the DB2 databases and database partitions that you choose to monitor. Graphical flows and line and fill graphs illustrate the activity on and between database components. Icons display the value of key statistics. Using the Spotlight browser, you can switch your monitoring focus between the various databases and partitions. Additionally, you can view activity at the DB2 instance level for any of these systems.
The power of Spotlight lies in its ability to provide visual and audible warnings if the performance metrics exceed acceptable thresholds. The components and dataflows on the home page change color to show you the source of the problem.
A range of reports and graphs provide you with detailed information about a DB2 database, database partition, or the instance to which the database belongs. This information can be viewed on the screen or be printed.
You can set Spotlight options to warn you when a threshold is reached. You can define a number of thresholds so that warning messages are displayed well before the traffic levels into or out of databases become critical.
Spotlight uses a number of different techniques to warn you when your DB2 instance or a database is exceeding a threshold. For example, to issue a warning, you can configure Spotlight to change a color on the home page or drilldown, provide an audible signal, or perform an action, such as send an email message.
The Client Application Analysis drilldown displays key performance statistics for all applications connected to monitored databases and partitions. At its top level, the drilldown provides an overview of performance during the current monitoring session. This is shown in the Client Applications tab.
From the Client Applications tab, you can drill down to detailed information on caching, sorting, locks, lock chains, units of work, and more for a certain application. This is shown in sub drilldown tabs, which are displayed in the lower half of the window when an application is selected. The additional statistics can be used to diagnose any problems detected in the Client Applications tab.
The steps below outline the basic workflow involved in using the Client Application Analysis drilldown.
To use the Client Application Analysis drilldown
View top level tabs to detect performance problems in client applications. Work from the Client Applications tab to check statistics. Work from Criteria tab to filter the list in the Client Applications tab based on criteria such as number of lock waits or timeouts.
Tip: To reduce the overhead incurred by this drilldown, show only active applications on the Client Applications tab. Right-click within the list of applications on the tab, and select Show only 'active' applications. This feature is not available on IBM DB2 10.5 and later if Monitor Functions Method is used to retrieve data.