Ich experimentiere mit Standalone-JPA und JTA/XA-Transaktionsverwaltung von Atomikos.Atomikos: Ausnahme, wenn die Transaktion mehr als eine Persistenz enthält
Mein einfacher Komponententest besteht aus 3 Datensätzen, die in einer JTA UserTransaction verpackt sind.
Wenn H2 als Hintergrunddatenbank verwendet wird, funktioniert der Test einwandfrei.
Bei Verwendung als Träger MySQL Datenbank, lösen die Sekunden persistieren diese Ausnahme:
com.mysql.jdbc.jdbc2.optional.MysqlXAException: XAER_INVAL: Ungültige Argumente (oder nicht unterstützten Befehl)
(siehe vollständige Stapelverfolgung und Protokollierung unten). Die Log-Datei gibt mehr Detail:
ACHTUNG: XA-Ressource 'jdbc/MySqlDS': Lebenslauf für XID '3139322E3136382E31342E3131372E746D30303030323030303831: 3139322E3136382E31342E3131372E746D32' angehoben -5: ungültige Argumente für den XA Betrieb
gegeben wurden Wenn Ich lasse nur einen einzigen persist
im Test, es gelingt. Der gleiche Test ist auch erfolgreich, wenn H2 anstelle von MySQL verwendet wird.
Also Frage: Was könnte die Ursache der Ausnahme im Falle von MySQL sein?
Hier ist der Haupttestcode von JtaJpaMySQLAtomikosTest.java
:
@Test
public void testSingleCommitMySql() throws Exception {
EntityManagerFactory emf = Persistence.createEntityManagerFactory("javaee7.standalone.jta.pu_mysql");
EntityManager em = emf.createEntityManager();
UserTransaction userTransaction = (UserTransaction) new InitialContext().lookup("java:comp/UserTransaction");
userTransaction.begin();
em.joinTransaction();
em.persist(new TestEntity("FOO", "A"));
em.persist(new TestEntity("BAR", "B"));
em.persist(new TestEntity("BAZ", "C"));
em.flush();
userTransaction.commit();
TypedQuery<TestEntity> query = em.createQuery("SELECT b FROM TestEntity b WHERE name = :name", TestEntity.class)
.setParameter("name", "FOO");
assertEquals("A", query.getSingleResult().getValue());
em.close();
emf.close();
}
Wenn Sie den vollständigen Test-Code benötigen, lassen Sie es mich wissen.
Hier ist der relevante Teil der Protokollierung + Ausnahme:
INFO: AtomikosDataSoureBean 'jdbc/mysqlDs': getConnection (null)...
Apr 28, 2016 12:34:57 PM com.atomikos.logging.JULLogger logInfo
INFO: AtomikosDataSoureBean 'jdbc/mysqlDs': init...
Apr 28, 2016 12:34:57 PM com.atomikos.logging.JULLogger logInfo
INFO: atomikos connection proxy for [email protected]: calling getAutoCommit...
Apr 28, 2016 12:34:57 PM com.atomikos.logging.JULLogger logInfo
INFO: atomikos connection proxy for [email protected]: calling getMetaData...
Apr 28, 2016 12:34:57 PM com.atomikos.logging.JULLogger logInfo
INFO: atomikos connection proxy for [email protected]: calling createStatement...
Apr 28, 2016 12:34:57 PM org.hibernate.tool.hbm2ddl.SchemaUpdate execute
INFO: HHH000396: Updating schema
Apr 28, 2016 12:34:57 PM org.hibernate.tool.hbm2ddl.TableMetadata <init>
INFO: HHH000261: Table found: twophasepoc.testentity
Apr 28, 2016 12:34:57 PM org.hibernate.tool.hbm2ddl.TableMetadata <init>
INFO: HHH000037: Columns: [name, id, value]
Apr 28, 2016 12:34:57 PM org.hibernate.tool.hbm2ddl.TableMetadata <init>
INFO: HHH000108: Foreign keys: []
Apr 28, 2016 12:34:57 PM org.hibernate.tool.hbm2ddl.TableMetadata <init>
INFO: HHH000126: Indexes: [primary]
Apr 28, 2016 12:34:57 PM org.hibernate.tool.hbm2ddl.SchemaUpdate execute
INFO: HHH000232: Schema update complete
Apr 28, 2016 12:34:57 PM com.atomikos.logging.JULLogger logInfo
INFO: atomikos connection proxy for [email protected]: calling getWarnings...
Apr 28, 2016 12:34:57 PM com.atomikos.logging.JULLogger logInfo
INFO: atomikos connection proxy for [email protected]: calling clearWarnings...
Apr 28, 2016 12:34:57 PM com.atomikos.logging.JULLogger logInfo
INFO: atomikos connection proxy for [email protected]: close()...
Apr 28, 2016 12:34:57 PM com.atomikos.logging.JULLogger logInfo
INFO: createCompositeTransaction (10000): created new ROOT transaction with id 192.168.14.117.tm0000200081
Apr 28, 2016 12:34:57 PM com.atomikos.logging.JULLogger logInfo
INFO: registerSynchronization ([email protected]) for transaction 192.168.14.117.tm0000200081
Hibernate:
insert
into
TestEntity
(name, value)
values
(?, ?)
Apr 28, 2016 12:34:57 PM com.atomikos.logging.JULLogger logInfo
INFO: AtomikosDataSoureBean 'jdbc/mysqlDs': getConnection (null)...
Apr 28, 2016 12:34:57 PM com.atomikos.logging.JULLogger logInfo
INFO: AtomikosDataSoureBean 'jdbc/mysqlDs': init...
Apr 28, 2016 12:34:57 PM com.atomikos.logging.JULLogger logInfo
INFO: addParticipant (XAResourceTransaction: 3139322E3136382E31342E3131372E746D30303030323030303831:3139322E3136382E31342E3131372E746D32) for transaction 192.168.14.117.tm0000200081
Apr 28, 2016 12:34:57 PM com.atomikos.logging.JULLogger logInfo
INFO: XAResource.start (3139322E3136382E31342E3131372E746D30303030323030303831:3139322E3136382E31342E3131372E746D32 , XAResource.TMNOFLAGS) on resource jdbc/mysqlDs represented by XAResource instance [email protected]
Apr 28, 2016 12:34:57 PM com.atomikos.logging.JULLogger logInfo
INFO: registerSynchronization (com.a[email protected]35a707b3) for transaction 192.168.14.117.tm0000200081
Apr 28, 2016 12:34:57 PM com.atomikos.logging.JULLogger logInfo
INFO: atomikos connection proxy for [email protected]: calling prepareStatement(insert into TestEntity (name, value) values (?, ?),1)...
Apr 28, 2016 12:34:57 PM com.atomikos.logging.JULLogger logInfo
INFO: atomikos connection proxy for [email protected]: isClosed()...
Apr 28, 2016 12:34:57 PM com.atomikos.logging.JULLogger logInfo
INFO: atomikos connection proxy for [email protected]: calling getWarnings...
Apr 28, 2016 12:34:57 PM com.atomikos.logging.JULLogger logInfo
INFO: atomikos connection proxy for [email protected]: calling clearWarnings...
Apr 28, 2016 12:34:57 PM com.atomikos.logging.JULLogger logInfo
INFO: atomikos connection proxy for [email protected]: close()...
Apr 28, 2016 12:34:57 PM com.atomikos.logging.JULLogger logInfo
INFO: XAResource.end (3139322E3136382E31342E3131372E746D30303030323030303831:3139322E3136382E31342E3131372E746D32 , XAResource.TMSUCCESS) on resource jdbc/mysqlDs represented by XAResource instance [email protected]
Hibernate:
insert
into
TestEntity
(name, value)
values
(?, ?)
Apr 28, 2016 12:34:57 PM com.atomikos.logging.JULLogger logInfo
INFO: AtomikosDataSoureBean 'jdbc/mysqlDs': getConnection (null)...
Apr 28, 2016 12:34:57 PM com.atomikos.logging.JULLogger logInfo
INFO: AtomikosDataSoureBean 'jdbc/mysqlDs': init...
Apr 28, 2016 12:34:57 PM com.atomikos.logging.JULLogger logInfo
INFO: addParticipant (XAResourceTransaction: 3139322E3136382E31342E3131372E746D30303030323030303831:3139322E3136382E31342E3131372E746D32) for transaction 192.168.14.117.tm0000200081
Apr 28, 2016 12:34:57 PM com.atomikos.logging.JULLogger logInfo
INFO: XAResource.start (3139322E3136382E31342E3131372E746D30303030323030303831:3139322E3136382E31342E3131372E746D32 , XAResource.TMJOIN) on resource jdbc/mysqlDs represented by XAResource instance [email protected]
Apr 28, 2016 12:34:57 PM com.atomikos.logging.JULLogger logWarning
WARNING: XA resource 'jdbc/mysqlDs': resume for XID '3139322E3136382E31342E3131372E746D30303030323030303831:3139322E3136382E31342E3131372E746D32' raised -5: invalid arguments were given for the XA operation
com.mysql.jdbc.jdbc2.optional.MysqlXAException: XAER_INVAL: Invalid arguments (or unsupported command)
at com.mysql.jdbc.jdbc2.optional.MysqlXAConnection.mapXAExceptionFromSQLException(MysqlXAConnection.java:581)
at com.mysql.jdbc.jdbc2.optional.MysqlXAConnection.dispatchCommand(MysqlXAConnection.java:566)
at com.mysql.jdbc.jdbc2.optional.MysqlXAConnection.start(MysqlXAConnection.java:507)
at com.atomikos.datasource.xa.XAResourceTransaction.resume(XAResourceTransaction.java:427)
at com.atomikos.datasource.xa.session.BranchEnlistedStateHandler.<init>(BranchEnlistedStateHandler.java:59)
at com.atomikos.datasource.xa.session.NotInBranchStateHandler.checkEnlistBeforeUse(NotInBranchStateHandler.java:64)
at com.atomikos.datasource.xa.session.TransactionContext.checkEnlistBeforeUse(TransactionContext.java:88)
at com.atomikos.datasource.xa.session.SessionHandleState.notifyBeforeUse(SessionHandleState.java:179)
at com.atomikos.jdbc.AtomikosConnectionProxy.enlist(AtomikosConnectionProxy.java:223)
at com.atomikos.jdbc.AtomikosConnectionProxy.invoke(AtomikosConnectionProxy.java:142)
at com.sun.proxy.$Proxy12.prepareStatement(Unknown Source)
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$2.doPrepare(StatementPreparerImpl.java:124)
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:186)
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl.prepareStatement(StatementPreparerImpl.java:122)
at org.hibernate.id.IdentityGenerator$GetGeneratedKeysDelegate.prepare(IdentityGenerator.java:89)
at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:55)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3032)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3556)
at org.hibernate.action.internal.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:97)
at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:480)
at org.hibernate.engine.spi.ActionQueue.addResolvedEntityInsertAction(ActionQueue.java:191)
at org.hibernate.engine.spi.ActionQueue.addInsertAction(ActionQueue.java:175)
at org.hibernate.engine.spi.ActionQueue.addAction(ActionQueue.java:210)
at org.hibernate.event.internal.AbstractSaveEventListener.addInsertAction(AbstractSaveEventListener.java:324)
at org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:288)
at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:194)
at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:125)
at org.hibernate.jpa.event.internal.core.JpaPersistEventListener.saveWithGeneratedId(JpaPersistEventListener.java:84)
at org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:206)
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:149)
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:75)
at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:807)
at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:780)
at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:785)
at org.hibernate.jpa.spi.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:1181)
at JtaJpaMySQLAtomikosTest.testSingleCommitMySql(JtaJpaMySQLAtomikosTest.java:88)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:30)
at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Caused by: java.sql.SQLException: XAER_INVAL: Invalid arguments (or unsupported command)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:957)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3878)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3814)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2478)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2625)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2547)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2505)
at com.mysql.jdbc.StatementImpl.executeInternal(StatementImpl.java:840)
at com.mysql.jdbc.StatementImpl.execute(StatementImpl.java:740)
at com.mysql.jdbc.jdbc2.optional.MysqlXAConnection.dispatchCommand(MysqlXAConnection.java:560)
... 60 more
Apr 28, 2016 12:34:57 PM com.atomikos.logging.JULLogger logWarning
WARNING: Error enlisting in transaction - connection might be broken? Please check the logs for more information...
com.atomikos.datasource.ResourceException: XA resource 'jdbc/mysqlDs': resume for XID '3139322E3136382E31342E3131372E746D30303030323030303831:3139322E3136382E31342E3131372E746D32' raised -5: invalid arguments were given for the XA operation
at com.atomikos.datasource.xa.XAResourceTransaction.resume(XAResourceTransaction.java:434)
at com.atomikos.datasource.xa.session.BranchEnlistedStateHandler.<init>(BranchEnlistedStateHandler.java:59)
at com.atomikos.datasource.xa.session.NotInBranchStateHandler.checkEnlistBeforeUse(NotInBranchStateHandler.java:64)
at com.atomikos.datasource.xa.session.TransactionContext.checkEnlistBeforeUse(TransactionContext.java:88)
at com.atomikos.datasource.xa.session.SessionHandleState.notifyBeforeUse(SessionHandleState.java:179)
at com.atomikos.jdbc.AtomikosConnectionProxy.enlist(AtomikosConnectionProxy.java:223)
at com.atomikos.jdbc.AtomikosConnectionProxy.invoke(AtomikosConnectionProxy.java:142)
at com.sun.proxy.$Proxy12.prepareStatement(Unknown Source)
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$2.doPrepare(StatementPreparerImpl.java:124)
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:186)
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl.prepareStatement(StatementPreparerImpl.java:122)
at org.hibernate.id.IdentityGenerator$GetGeneratedKeysDelegate.prepare(IdentityGenerator.java:89)
at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:55)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3032)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3556)
at org.hibernate.action.internal.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:97)
at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:480)
at org.hibernate.engine.spi.ActionQueue.addResolvedEntityInsertAction(ActionQueue.java:191)
at org.hibernate.engine.spi.ActionQueue.addInsertAction(ActionQueue.java:175)
at org.hibernate.engine.spi.ActionQueue.addAction(ActionQueue.java:210)
at org.hibernate.event.internal.AbstractSaveEventListener.addInsertAction(AbstractSaveEventListener.java:324)
at org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:288)
at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:194)
at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:125)
at org.hibernate.jpa.event.internal.core.JpaPersistEventListener.saveWithGeneratedId(JpaPersistEventListener.java:84)
at org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:206)
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:149)
at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:75)
at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:807)
at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:780)
at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:785)
at org.hibernate.jpa.spi.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:1181)
at JtaJpaMySQLAtomikosTest.testSingleCommitMySql(JtaJpaMySQLAtomikosTest.java:88)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:30)
at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Apr 28, 2016 12:34:57 PM com.atomikos.logging.JULLogger logInfo
INFO: setRollbackOnly() called for transaction 192.168.14.117.tm0000200081
Hier ist die persistence.xml
:
<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://xmlns.jcp.org/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd"
version="2.1">
<persistence-unit name="javaee7.standalone.jta.pu_mysql" transaction-type="JTA">
<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
<jta-data-source>jdbc/mysqlDs</jta-data-source>
<class>TestEntity</class>
<properties>
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/>
<property name="hibernate.show_sql" value="true"/>
<property name="hibernate.format_sql" value="true"/>
<property name="hibernate.hbm2ddl.auto" value="update"/>
<property name="hibernate.transaction.jta.platform" value="AtomikosJtaPlatform"/>
</properties>
</persistence-unit>
</persistence>
Sie verwenden, die von MySQL jar Version erkundet werden? –
@SyedEkramUddinEmon mysql Server ist 5.5.31 (lokal auf meinem Windows-Rechner ausgeführt), Connector-J ist 5.1.38 – geert3