Use independent transaction manager

src/main/java/nl/nn/testtool/storage/database/DatabaseStorage.java

@@ -41,8 +41,6 @@
 import org.springframework.jdbc.core.JdbcTemplate;
 import org.springframework.jdbc.core.PreparedStatementSetter;
 import org.springframework.transaction.annotation.EnableTransactionManagement;
-import org.springframework.transaction.annotation.Isolation;
-import org.springframework.transaction.annotation.Propagation;
 import org.springframework.transaction.annotation.Transactional;
 
 import lombok.Getter;
@@ -66,10 +64,13 @@
 // Without proxyTargetClass = true the test webapp will give: Bean named 'proofOfMigrationStorage' is expected to be of
 // type 'nl.nn.testtool.storage.proofofmigration.ProofOfMigrationStorage' but was actually of type 'jdk.proxy3.$Proxy26'
 @EnableTransactionManagement(proxyTargetClass = true)
-// REQUIRES_NEW to prevent interference with transactions of the application that is using Ladybug. Will prevent the
-// following error running TestIAF Larva tests with Narayana: You cannot commit during a managed transaction
-// READ_UNCOMMITTED to optimize performance and minimize locking
-@Transactional(propagation = Propagation.REQUIRES_NEW, isolation = Isolation.READ_UNCOMMITTED)
+// Qualifier ladybug makes it possible to have an independent transaction manager to prevent interference with
+// transactions of the application that is using Ladybug. It will prevent the following error running TestIAF Larva
+// tests with Narayana: You cannot commit during a managed transaction. With propagation = Propagation.REQUIRES_NEW
+// this error is also gone but then tests fail with: Commit not allowed by transaction service. To optimize performance
+// and minimize locking isolation = Isolation.READ_UNCOMMITTED could be considered but will give the following error for
+// Oracle running the TestIAF test matrix: READ_COMMITTED and SERIALIZABLE are the only valid transaction levels.
+@Transactional("ladybug")
 // @Dependent disabled for Quarkus for now because of the use of JdbcTemplate
 public class DatabaseStorage implements LogStorage, CrudStorage {
 	private static final Logger log = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());

src/test/resources/springTestToolTestJUnit-forDbStorage.xml

@@ -38,6 +38,7 @@
 
 	<bean name="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
 		<property name="dataSource" ref="dataSource"/>
+		<qualifier value="ladybug"/>
 	</bean>
 
 	<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">