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Support Article

Report Query "include descendant classes" executes 120K times



This query will execute when the "include all descendant classes" is set in the report definition. This is the default setting.

With app_rulesets(pzRuleSetName) as (SELECT "PC0AR"."pzRuleSetName" AS "pzRuleSetName" FROM ( SELECT "PC0AR".pzRuleSetName AS "pzRuleSetName" FROM RULES.pr_sys_app_hierarchy_flat "PC0AH" INNER JOIN RULES.pr_sys_app_ruleset_index "PC0AR" ON ( ( "PC0AH".pzAppHash = "PC0AR".pzAppHash ) ) WHERE ( "PC0AH".pzTopAppHash = :1 ) ) "PC0AR" ) ,app_classes(pxClassName) as (SELECT DISTINCT "CA1".pxClassName AS "pxClassName" FROM RULES.pr_sys_class_ancestors "CA1" INNER JOIN RULES.pr_sys_class_ancestors "CA2" ON ( ( "CA1".pxHeight <= "CA2".pxHeight AND "CA1".pxHashKey = "CA2".pxHashKey ) ) WHERE ( "CA1".pxHashKey IN (SELECT "PC0CA".pxHashKey AS "Field1" FROM RULES.pr_sys_class_ancestors "PC0CA" WHERE ( "PC0CA".pxClassName = :2 ) ) AND "CA2".pxClassName = :3 ) ) SELECT "AC".pxClassName AS "pxClassName" FROM RULES.pr4_base "r" INNER JOIN app_classes "AC" ON ( ( "r".pyClassName = "AC".pxClassName ) ) INNER JOIN app_rulesets "AR" ON ( ( "r".pyRuleSet = "AR".pzRuleSetName ) )

This is processed 120K times during a load test and consumes a significant amount of CPU on the database.

Error Messages

Not Applicable

Steps to Reproduce

Not Applicable

Root Cause

A defect or configuration issue in the operating environment.

During the load test reports are being run with the "Include all descendant classes" flag set.

The execution of the query is a 1 for 1 reflection on how many reports with this setting are run.


Make the following change to the operating environment:

Remove the "Include all descendant classes" setting from report definitions unless it is explicitly needed for the report.

Published August 11, 2017 - Updated October 8, 2020

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