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From Knut Anders Hatlen <Knut.Hat...@Sun.COM>
Subject Re: Just in memory ?
Date Tue, 16 Sep 2008 09:07:11 GMT
Antonio Goncalves <antonio.mailing@gmail.com> writes:

> Hi,
>
> I'm using the Derby network database to run my application and the Embedded
> mode for testing. Both work fine. But when I use the Embedded mode, Derby
> creates a directory on my hard drive full or files. I would like just to have
> a in-memory database, no I/O, just in-memory. Is it possible with Derby ?

Hi Antonio,

I'm afraid that's not possible with Derby at the moment. This feature
has been requested by others as well. See these issues in the bug
tracker:

https://issues.apache.org/jira/browse/DERBY-646
https://issues.apache.org/jira/browse/DERBY-2798

There hasn't been any activity in any of these issues for quite a while,
though.

> I've seen a very old thread (http://mail-archives.apache.org/mod_mbox/
> db-derby-dev/200510.mbox/%3C4364E8D3.9030702@sbcglobal.net%3E) that mentions
> the URL jdbc:derby:memory:myDb but that doesn't work. I've cheked out the
> Derby source code but didn't find anything about that.

I think you need the patch from DERBY-646 to get this to work.

-- 
Knut Anders

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