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From "Daniel John Debrunner (JIRA)" <derby-...@db.apache.org>
Subject [jira] Commented: (DERBY-1459) Early load of Derby driver with JDBC 4.0 autoloading can lead to derby properties not being processed or derby boot time actions consuming resources when a connection is made with another driver
Date Tue, 27 Jun 2006 20:58:31 GMT
    [ http://issues.apache.org/jira/browse/DERBY-1459?page=comments#action_12418124 ] 

Daniel John Debrunner commented on DERBY-1459:
----------------------------------------------

I think the general approach is good, but do we really want AutoloadedDriver to be part of
the public api? With EmbeddedDriver extending this class it will become so.

> Early load of Derby driver with JDBC 4.0 autoloading can lead to derby properties not
being processed or derby boot time actions consuming resources when a connection is made with
another driver
> --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>          Key: DERBY-1459
>          URL: http://issues.apache.org/jira/browse/DERBY-1459
>      Project: Derby
>         Type: Bug

>   Components: JDBC, Services
>     Versions: 10.2.0.0
>  Environment: JDK 1.6 
>     Reporter: Kathey Marsden
>     Priority: Critical
>      Fix For: 10.2.0.0
>  Attachments: autoloading_scenarios.html, bug1459_v01.diff
>
> The addition of support for autoloading of Derby drivers, DERBY-930, caused two potentially
serious regresions for applications.
> 1) Early load of driver can mean that  derby system properties, such as derby.system.home
may not be processed by the driver because they are set after the driver is loaded.
> 2) Early load of the driver can mean boot time operations, such as starting network server
with derby.drda.startNetworkServer can happen even when Derby is never used if a connection
is made to another database such as Oracle.
> The attached file autoloading_scenarios.html  shows scenarios that show these regressions
plus another case that will regress if boot time operations are moved to the first Derby embedded
connection.   I don't know what solution is available that would handle all three cases.

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