org.jboss.tm.JBossRollbackException with change the Computer

[adver11]

I start Jboss, and include a EJB 3.0 MDB TestMDB(it connect to IBM MQ Series 5.2), a EJB 3.0 Persistence entity beans :Users.class, a EJB 3.0 Stateless Session Beans:TestUsers.class. Class TestUsers access Class Users like this:

boolean Create_users(...) {
 try {
 Users ca = new Users();
 ......
 em.persist(ca);
 return true;
 } catch(Exception e) {
 return false;
 }
 }

I start Jboss, all runs fine. and then I run a Client to call Class TestUser like this:

try {
 initContext = new InitialContext();
 if(initContext != null) {
 TestUserRemote TU = (TestUserRemote) initContext.lookup("TestUser/remote");
 if(TU.Create_users(...)) {
 System.out.println("ok");
 } else {
 System.out.println("fail");
 }
 }
} catch(Exception e) {
}

at first, I run Client program twice, it means I insert same data line twice.
First time, TU.Create_users return true, Second time it return false.

and then, I change computer's Date to tomorrow Date(for example:today is 2006-03-07, change to 2006-03-08), JBoss shows:

12:40:14,771 ERROR [STDERR] 2006.03.08 12:40:14 MQJMS1023E ??????
12:40:14,911 WARN [MDB] JMS provider failure detected:
javax.jms.JMSException: MQJMS2002: ? MQ ????????
 at com.ibm.mq.jms.services.ConfigEnvironment.newException(ConfigEnvironm
ent.java:530)
 at com.ibm.mq.jms.MQQueueAgentThread.browse(MQQueueAgentThread.java:509)

 at com.ibm.mq.jms.MQQueueAgentThread.run(MQQueueAgentThread.java:898)
 at java.lang.Thread.run(Thread.java:595)
12:40:14,911 INFO [MDB] Trying to reconnect to JMS provider

I run Client programe again(insert same data line), but TU.Create_users not return false. it shows:

java.lang.RuntimeException: org.jboss.tm.JBossRollbackException: Unable to commit, tx=TransactionImpl:XidImpl[FormatId=257, GlobalId=adver/18, BranchQual=, localId=18] status=STATUS_NO_TRANSACTION; - nested throwable: (org.hibernate.exception.ConstraintViolationException: Could not execute JDBC batch update)
 at org.jboss.aspects.tx.TxPolicy.handleEndTransactionException(TxPolicy.java:198)
 at org.jboss.aspects.tx.TxPolicy.endTransaction(TxPolicy.java:180)
 at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:87)
 at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:192)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98)
 at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98)
..........
Caused by: org.jboss.tm.JBossRollbackException: Unable to commit, tx=TransactionImpl:XidImpl[FormatId=257, GlobalId=adver/18, BranchQual=, localId=18] status=STATUS_NO_TRANSACTION; - nested throwable: (org.hibernate.exception.ConstraintViolationException: Could not execute JDBC batch update)
 at org.jboss.tm.TransactionImpl.commit(TransactionImpl.java:369)
 at org.jboss.aspects.tx.TxPolicy.endTransaction(TxPolicy.java:175)
 at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:87)
 at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:192)
...........
Caused by: org.hibernate.exception.ConstraintViolationException: Could not execute JDBC batch update
 at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:69)
 at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
 at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:202)
 at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:230)
...........
Caused by: java.sql.BatchUpdateException: ORA-00001: ???????? (FIDS.SYS_C004233)

 at oracle.jdbc.dbaccess.DBError.throwBatchUpdateException(DBError.java:458)
 at oracle.jdbc.driver.OraclePreparedStatement.executeBatch(OraclePreparedStatement.java:3907)
 at org.jboss.resource.adapter.jdbc.WrappedStatement.executeBatch(WrappedStatement.java:517)
 at org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:58)
 at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:195)
 ... 34 more

I think that something trouble.