Tuesday, June 14, 2011

Heavy Index Skip Scan wait

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Statement resources are spent performing Range index skip scans on the index specified in the Object column.
Heavy Index Skip Scan finding

Description
What to do next
Perform one of the following options:
n   Click the Locate icon to focus on the relevant step in the execution plan.
n   Select the finding type to investigate the objects used and their structure in the Objects tab.
n   Select the finding type to investigate step statistics and resource consumption in the Statistics tab.
Advice
To reduce the Range Skip Scan resource consumption   consider:
n   Changing column order in the Index for better matching level or adding a new index. Check the global effect of this change by launching to WhatIF workspace.

    
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