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Spotlight on DB2 6.9.3 - 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
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Connect to Windows Systems Background Information Home Page Alarms Drilldowns View | Options Troubleshooting
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Sort, Piped Sorts Accepted

The number of piped sorts that have been accepted. Consider the following:

  • If the number of accepted piped sorts is low relative to the number of piped sorts requested, try adjusting either the sort heap or the sort heap threshold.

  • If you have piped sorts that are being rejected, try decreasing the sort heap or increasing the sort heap threshold.

Note: Either of these choices could incur a cost. For example, increasing the sort heap threshold could retain too much memory for sorting, thus adversely affecting system performance. On the other hand decreasing the sort heap could cause excessive paging and possibly an extra merge phase that could cause the sort to perform poorly.

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