Spring’s embedded H2 datasource and DB_CLOSE_ON_EXIT

问题:

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?

回答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> 

回答2:

I had the same issue as Michael Piefel's one, and tried to implement the solution that Michail Nikolaev explained. but i did not work, somehow spring-batch, then, where are the metadata JOB_* tables are. So, as the version of spring-jdbc used by my application is 3.0.5 and increasing the spring-framework one enters in conflict with dwr (i use it in my app) it's a geo localisation based on spring, dwr and gmaps api. I downloaded the spring-jdbc 4.0.3 release and get from it the H2EmbeddedDatabaseConfigurer.class who has DB_CLOSE_ON_EXIT=FALSE by default and replace with it the one on the spring-jdbc 3.0.5 Relase and deploy-it in the war file and it works, the shutdown of the VM didn't provoque the closing of the in memory database.

Hope this unusual solution helps if other people as me wouldn't be able to implement the other solution.

文章来源: Spring’s embedded H2 datasource and DB_CLOSE_ON_EXIT