(EJB 高手来看一下) 原来一切正常，但是自从在SQL数据库里加了一个触发器后，就报错了，搞不懂???

报的错误如下：
log4j:WARN   No   appenders   could   be   found   for   logger   (org.jboss.util.NestedThrowable).

log4j:WARN   Please   initialize   the   log4j   system   properly.

org.jboss.tm.JBossTransactionRolledbackException:   null;   nested   exception   is:  
org.jboss.tm.JBossRollbackException:   Unable   to   commit,   tx=TransactionImpl:XidImpl[FormatId=257,  
GlobalId=lqgscp/15,   BranchQual=,   localId=15]   status=STATUS_NO_TRANSACTION;   -   nested   throwable:  
(javax.ejb.EJBException:   Update   failed.   Expected   one   affected   row:   rowsAffected=0,   id=dyxx.TransinfoPK@3a2b7dd);
-   nested   throwable:   (org.jboss.tm.JBossRollbackException:   Unable   to   commit,   tx=TransactionImpl:XidImpl[FormatId=257,
GlobalId=lqgscp/15,   BranchQual=,   localId=15]   status=STATUS_NO_TRANSACTION;   -   nested   throwable:   (javax.ejb.EJBException:
Update   failed.   Expected   one   affected   row:   rowsAffected=0,   id=dyxx.TransinfoPK@3a2b7dd))

at   org.jboss.ejb.plugins.TxInterceptorCMT.throwJBossException(TxInterceptorCMT.java:554)

at   org.jboss.ejb.plugins.TxInterceptorCMT.endTransaction(TxInterceptorCMT.java:491)

at   org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:346)

at   org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:166)

at   org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:139)

at   org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:192)

at   org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinderInterceptor.java:122)

at   org.jboss.ejb.SessionContainer.internalInvoke(SessionContainer.java:624)

at   org.jboss.ejb.Container.invoke(Container.java:873)

at   sun.reflect.NativeMethodAccessorImpl.invoke0(Native   Method)

at   sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

at   sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at   java.lang.reflect.Method.invoke(Method.java:585)

at   org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:141)

at   org.jboss.mx.server.Invocation.dispatch(Invocation.java:80)

at   org.jboss.mx.server.Invocation.invoke(Invocation.java:72)

at   org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:249)

at   org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:644)

at   org.jboss.invocation.jrmp.server.JRMPInvoker$MBeanServerAction.invoke(JRMPInvoker.java:805)

at   org.jboss.invocation.jrmp.server.JRMPInvoker.invoke(JRMPInvoker.java:406)

at   sun.reflect.NativeMethodAccessorImpl.invoke0(Native   Method)

at   sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

at   sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at   java.lang.reflect.Method.invoke(Method.java:585)

at   sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:294)

at   sun.rmi.transport.Transport$1.run(Transport.java:153)

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