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Spotlight on DB2 6.10 - User Guide

Spotlight on IBM DB2 LUW (Linux, Unix, and Windows)
New in This Release Getting started with Spotlight on IBM DB2 LUW Desktop features specific to Spotlight on IBM DB2 LUW Spotlight on IBM DB2 LUW drilldowns
About Spotlight on IBM DB2 LUW drilldowns Buffer Pool Analysis drilldown Client Application Analysis drilldown Database Analysis drilldown Database Manager Summary drilldown Diagnostic Log drilldown FCM Analysis drilldown Tablespace Analysis drilldown Top SQL drilldown Operating System drilldown Workload Management Analysis drilldown
Spotlight on IBM DB2 LUW alarms Spotlight on IBM DB2 LUW Options Tuning SQL statements in Spotlight on IBM DB2 LUW
Spotlight Basics
Spotlight Connections Monitor Spotlight Connections Alarms Charts, Grids And Home Page Components View | Options Troubleshooting
Spotlight History Spotlight on Windows
Connect to Windows Systems Background Information Home Page Alarms Drilldowns View | Options Troubleshooting
Spotlight on Unix About us Third-party contributions Copyright

Avg Lock Wait Time graphs

The Avg. Lock Wait Time graph keeps track of the average wait time (in milliseconds) for locks in the database over consecutive monitoring intervals. Spotlight calculates the average lock wait time for each monitoring interval by dividing the total wait time for all applications in the database by the total number of waits occurring in the interval.

If the average lock wait time is high, access the Client Applications Analysis drilldown to pinpoint the applications that hold many locks or have lock escalations. You can then tune these applications to improve concurrency, if appropriate. If escalations are the reason for a high average lock wait time, the values of the LOCKLIST and MAXLOCKS configuration parameters might be too low.


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