Hey Noel, you might want to read through 
http://www.h2database.com/html/features.html#in_memory_databases

By default, closing the last connection to a database closes the database. 
> For an in-memory database, this means the content is lost. To keep the 
> database open, add ;DB_CLOSE_DELAY=-1 to the database URL. To keep the 
> content of an in-memory database as long as the virtual machine is alive, 
> use jdbc:h2:mem:test;DB_CLOSE_DELAY=-1



On Tuesday, March 27, 2012 3:43:30 AM UTC-5, Noel Grandin wrote:
>
> On 2012-03-27 00:06, steve.ebersole wrote:
> >
> > Note that this is NOT using H2 JTA/XA support.  It is simply using H2 
> > connections obtained via DriverManager wrapped in an Enhydra 
> > DataSource.  The url is 'jdbc:h2:mem:db1;DB_CLOSE_DELAY=-1;MVCC=TRUE'.
> >
> > Anyone see anything obvious?  If it weren't for the 
> > 'DB_CLOSE_DELAY=-1', I would think the problem was the data cache 
> > being dropped across the multiple connections.  That or somehow the 
> > commit call on the connection is not being handled properly.
> >
> Do you realise your URL says to __negative__ one seconds for the close 
> delay?
> That means that the moment that the last connection closes, the DB will 
> be destroyed.
>
> I think you should be using __positive__ one seconds, and I've added 
> some code to the next version of H2 to catch such mistakes i.e. 
> DB_CLOSE_DELAY must be >= 0
>
>
>

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