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From Michael Gentry <>
Subject Re: Cayenne and H2 on the desktop
Date Wed, 21 Oct 2009 00:15:54 GMT
An embedded database is one that runs internally instead of requiring
a separate database server.  This makes it convenient for standalone

For the database connection itself, though, you'd want something like:

JDBC URL: jdbc:h2:~/mydb
Username: sa
Password: <blank>

As for PostgreSQL support in H2, I don't know anything about that.  Sorry.


On Tue, Oct 20, 2009 at 8:00 PM, Eric Lazarus <> wrote:
> Folks
> Thanks for you folks direction on using H2 as our database but we are a bit stuck on
how to do it. We are moving toward using Cayenne 3.0M6 and H2 for the desktop version of an
application that should be as idiot proof as possible. We want for the end user to not have
to understand that there is a database there at all.
> Any suggestions about how we should configure things? For example, should we configure
H2 to run embedded if we don't want the end user to have to be aware of it? How DO we configure
it that way? What should we be reading to figure out how to do that? I am not even sure we
understand what it means to run "embeded." Does that mean that that database is in the same
VM? That we don't go via JDBC at all?
> Also, we are trying to load a postgres dump into H2 and am failing because H2 does not
support the COPY statement. I have tried enabling postgres compatibility mode by appending
';MODE=PostgreSQL' to my database url. This results in a error message stating 'File not found
'backup.sql'. I tried putting my dump in a file by that name and got the same message.
> I also tried sticking 'SET MODE PostgreSQL ;' at the top of my SQL dump file. This had
no effect the script still abended with a syntax error on the COPY command.
> Where the best place to ask H2 questions? Is there an IRC room? A list serve?
> thanks!
> Eric
> +1 (917) 589-6579

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