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http://issues.apache.org/jira/browse/DERBY-1459?page=comments#action_12420111 ] 

Rick Hillegas commented on DERBY-1459:
--------------------------------------

I'm beginning to run a battery of derbyalls against this patch using various 
VMs with and without jar files. So far derbyall runs cleanly (no errors at all) 
with this patch when run against 1.6 and the derby jar files.

Unless someone objects to this patch, I plan to commit it if the tests pass.

> 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, bug1459_v02.diff, 
> bug1459_v03.diff, bug1459_v04.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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