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From Andrus Adamchik <>
Subject Re: H2 rev engineer
Date Fri, 20 Oct 2017 16:06:22 GMT
> jdbc:h2:mem:test;MVCC=TRUE

This is an in-memory DB URL. So it exists in Squirrel SQL Client process and not on disk.
Try an experiment - close and reopen Squirrel SQL Client and see if the DB is still there.

You will need to use a URL that points to a file. E.g. jdbc:h2:/data/sample

FWIW I prefer Derby for my embedded DB. Feels more reliable than H2 or HSQL. Also has an in-memory
and on-disk modes.


> On Oct 20, 2017, at 6:55 PM, Tony Giaccone <> wrote:
> I created an H2 database, using our standard SQL. Now I'd like to
> rev-engineer that db with cayenne, but the schema doesn't show up in the
> modeler.
> To reproduce this problem, I follow these steps:
> $ java -cp bin/h2*.jar -tcp -tcpAllowOthers
> this creates a H2 database.
> I connect with Squirrel SQL Client
> driver: org.h2.Driver
> URL: jdbc:h2:mem:test;MVCC=TRUE
> This connects to the H2 Db, where I execute
> This creates the new schema which, when I refresh the tree in squirrel, is
> displayed.
> I then try to rev-engineer with the cayenne modeler 4.1.M1
> Only two schema's show up in the modeler drop down, INFORMATION_SCHEMA and
> PUBLIC the newly created  schema  CORE is not in the list.
> Any Suggestions?
> Tony Giaccone

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