[ http://issues.apache.org/jira/browse/DERBY-818?page=all ]
Daniel John Debrunner resolved DERBY-818:
-----------------------------------------
Fix Version: 10.2.0.0
Resolution: Fixed
> Read-only embedded ResultSets incur performance penalty due to updateable
> ResultSet code.
> -----------------------------------------------------------------------------------------
>
> Key: DERBY-818
> URL: http://issues.apache.org/jira/browse/DERBY-818
> Project: Derby
> Type: Improvement
> Components: JDBC, Performance
> Reporter: Daniel John Debrunner
> Assignee: Daniel John Debrunner
> Priority: Minor
> Fix For: 10.2.0.0
> Attachments: derby818patch.txt
>
> The fields columnGotUpdated and copyOfDatabaseRow are allocated and
> maintained in EmbedResultSet for every ResultSet but they are only required
> if the result set is updateable. I saw a 5% improvement in execution rate on
> a simple VALUES clause when fixing this.
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