core/src/test/resources/hsqldb-tools-oozie-site.xml

<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
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<configuration>
    <property>
        <name>oozie.service.JPAService.jdbc.driver</name>
        <value>org.hsqldb.jdbcDriver</value>
    </property>
    <!--
      It is required to enforce length checks for string fields while trying to persist objects with OpenJPA in tests. To this end,
      we need to set sql.enforce_strict_size to true when creating the EntityManagerFactory object in JPAService.
      Please see http://hsqldb.org/doc/guide/ch04.html HSQLDB docs for details.
    -->
    <property>
        <name>oozie.service.JPAService.jdbc.url</name>
        <value>jdbc:hsqldb:mem:oozie-db;create=true;sql.enforce_strict_size=true</value>
    </property>
</configuration>