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https://issues.apache.org/jira/browse/DERBY-5698?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kim Haase closed DERBY-5698.
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Changes have appeared in Latest Alpha Manuals.
> Document performance issue with 2-arg versions of setXXXStream methods for
> LOBs
> -------------------------------------------------------------------------------
>
> Key: DERBY-5698
> URL: https://issues.apache.org/jira/browse/DERBY-5698
> Project: Derby
> Issue Type: Improvement
> Components: Documentation
> Affects Versions: 10.8.2.2
> Reporter: Kim Haase
> Assignee: Kim Haase
> Fix For: 10.9.0.0
>
> Attachments: DERBY-5698-2.diff, DERBY-5698-2.zip, DERBY-5698-3.diff,
> DERBY-5698-3.zip, DERBY-5698.diff, DERBY-5698.stat, DERBY-5698.zip
>
>
> The PreparedStatement.setAsciiStream and other methods have a 3-arg form that
> includes the length of the stream and a 2-arg form that does not. If the
> 2-arg form is used, Derby has to calculate the length every time the method
> is called. With LOBs, especially large ones, this can cause a major
> performance impact, especially if the method is called repeatedly. This
> should be documented where appropriate.
> Kristian, please feel free to correct or amplify anything I've said here.
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