Spring’s embedded H2 datasource and DB_CLOSE_ON_EXIT

Question

For unit tests (call them integration tests if you want) I have configured an embedded database in my Spring config like so:

<jdbc:embedded-database id="dataSource" type="H2">
    <jdbc:script location="classpath:schema_h2.sql" />
</jdbc:embedded-database>

Now, when running the tests from the command line, they work fine, but I get some errors at the end (harmless, but irritating):

WARN  2013-03-25 12:20:22,656 [Thread-9] o.s.j.d.e.H2EmbeddedDatabaseConfigurer 'Could not shutdown embedded database'
org.h2.jdbc.JdbcSQLException: Database is already closed (to disable automatic closing at VM shutdown, add ";DB_CLOSE_ON_EXIT=FALSE" to the db URL) [90121-170]
    at org.h2.message.DbException.getJdbcSQLException(DbException.java:329) ~[h2-1.3.170.jar:1.3.170]
    ...
    at org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseFactoryBean.destroy(EmbeddedDatabaseFactoryBean.java:65) [spring-jdbc-3.2.1.RELEASE.jar:3.2.1.RELEASE]
    at org.springframework.beans.factory.support.DisposableBeanAdapter.destroy(DisposableBeanAdapter.java:238) [spring-beans-3.2.1.RELEASE.jar:3.2.1.RELEASE]

Now the tip contained in the exception is fine in general, but how do I add this attribute to the embedded datasource? Do I have to expand it, configure it by hand so to speak, to add such ‘advanced’ features?

Answer 1

Specify parameter in JDBC url jdbc:h2:~/test;DB_CLOSE_ON_EXIT=FALSE

Also for in-memory test database I suggest you to add DB_CLOSE_DELAY=-1, like this:

jdbc:h2:mem:alm;MODE=Oracle;DB_CLOSE_DELAY=-1

To add JDBC connection url to embedded-dababase change it to:

<bean id="dataSource" class="org.springframework.jdbc.datasource.SimpleDriverDataSource">
    <property name="driverClass" value="org.h2.Driver"/>
    <property name="url" value="jdbc:h2:mem:test;MODE=Oracle;DB_CLOSE_DELAY=-1;DB_CLOSE_ON_EXIT=FALSE"/>
    <property name="username" value="sa"/>
    <property name="password" value=""/>
</bean>

<jdbc:initialize-database data-source="dataSource" ignore-failures="DROPS">
    <jdbc:script location="classpath:schema_h2.sql" />
 </jdbc:initialize-database>