Do you want a complete in-memory Apache Derby?
Would you like to see an in-memory backend storage module for Apache Derby? Then please vote for this issue on their JIRA .. https://issues.apache.org/jira/browse/DERBY-646.
In-memory databases are very useful for running inside of unit tests for example. It is the main reason why we still use HSQL in unit tests.
Glassfish and Derby and PostgreSQL
In my last post I gave a link to instructions for setting up a PostgreSQL database connection pool in Glassfish. Those instructions had a note attached about a mismatch between sequence names generated by PostgreSQL and Glassfish for serial