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https://issues.apache.org/jira/browse/DERBY-3134?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14129005#comment-14129005
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Kim Haase commented on DERBY-3134:
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The properties are now in the Reference Manual, but the issue still seems valid.
> derby.language.stalePlanCheckInterval not documented
> ----------------------------------------------------
>
> Key: DERBY-3134
> URL: https://issues.apache.org/jira/browse/DERBY-3134
> Project: Derby
> Issue Type: Bug
> Components: Documentation
> Affects Versions: 10.0.2.0, 10.0.2.1, 10.1.1.0, 10.1.2.1, 10.1.3.1,
> 10.2.1.6, 10.2.2.0, 10.3.1.4, 10.3.2.1, 10.3.3.0, 10.4.1.3, 10.4.2.0,
> 10.5.1.1, 10.5.2.0, 10.5.3.0, 10.6.1.0, 10.6.2.1, 10.7.1.1
> Reporter: Dag H. Wanvik
> Priority: Minor
> Labels: derby_triage10_11
>
> I could not find any documentation for this property:
> From Property.java:
> derby.language.stalePlanCheckInterval
> This property tells the number of times a prepared statement
> should be executed before checking whether its plan is stale.
> Database property. Dynamic property.
> The property section in the Tuning guide should mention it.
> The section "Working with cardinality statistics" in the Tuning guide
> should mention it also.
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