I'm trying to run my SEAM+ICEFACES app on GLASSFISH.
But I'm getting this error, when I want to use hibernate(searching db).

javax.ejb.TransactionRolledbackLocalException: Exception thrown from bean; nested exception is: java.lang.NullPointerException
java.lang.NullPointerException
 at com.sun.enterprise.util.EntityManagerWrapper.createQuery(EntityManagerWrapper.java:349)
 at org.jboss.seam.persistence.EntityManagerProxy.createQuery(EntityManagerProxy.java:79)
 at nautilia.sklepy.ejb.web.customers.CustomerSearch.Find(CustomerSearch.java:76)
 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 com.sun.enterprise.security.application.EJBSecurityManager.runMethod(EJBSecurityManager.java:1067)
 at com.sun.enterprise.security.SecurityUtil.invoke(SecurityUtil.java:176)
 at com.sun.ejb.containers.BaseContainer.invokeBeanMethod(BaseContainer.java:4005)
 at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:483)
 at com.sun.ejb.Invocation.proceed(Invocation.java:498)
 at org.jboss.seam.intercept.EJBInvocationContext.proceed(EJBInvocationContext.java:44)
 at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:56)
 at org.jboss.seam.transaction.RollbackInterceptor.aroundInvoke(RollbackInterceptor.java:31)
 at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
 at org.jboss.seam.core.BijectionInterceptor.aroundInvoke(BijectionInterceptor.java:46)
 at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
 at org.jboss.seam.core.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:42)
 at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
 at org.jboss.seam.persistence.EntityManagerProxyInterceptor.aroundInvoke(EntityManagerProxyInterceptor.java:26)
 at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
 at org.jboss.seam.persistence.HibernateSessionProxyInterceptor.aroundInvoke(HibernateSessionProxyInterceptor.java:27)

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd">
 <persistence-unit name="sklepyPU" transaction-type="JTA">
 <provider>org.hibernate.ejb.HibernatePersistence</provider>
 <jta-data-source>jdbc/mysql</jta-data-source>
 <properties>

 <property name="hibernate.transaction.manager_lookup_class" value="org.hibernate.transaction.SunONETransactionManagerLookup"/>
 <property name="hibernate.hbm2ddl.auto" value="create-drop"/>
 <property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/>
 <property name="hibernate.case.user_query_cache" value="true"/>
 <property name="hibernate.show_sql" value="true"/>
 </properties>



 </persistence-unit>
</persistence>

<?xml version="1.0" encoding="UTF-8"?>
<components xmlns="http://jboss.com/products/seam/components"
 xmlns:core="http://jboss.com/products/seam/core"
 xmlns:persistence="http://jboss.com/products/seam/persistence"
 xmlns:transaction="http://jboss.com/products/seam/transaction"
 xmlns:security="http://jboss.com/products/seam/security"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation=
 "http://jboss.com/products/seam/core http://jboss.com/products/seam/core-2.0.xsd
 http://jboss.com/products/seam/persistence http://jboss.com/products/seam/persistence-2.0.xsd
 http://jboss.com/products/seam/transaction http://jboss.com/products/seam/transaction-2.0.xsd
 http://jboss.com/products/seam/security http://jboss.com/products/seam/security-2.0.xsd
http://jboss.com/products/seam/components http://jboss.com/products/seam/components-2.0.xsd">

 <core:init jndi-pattern="java:comp/env/sklepy/#{ejbName}/local" debug="true"/>

 <core:manager conversation-timeout="120000"
 concurrent-request-timeout="500"
 conversation-id-parameter="cid"/>

 <persistence:entity-manager-factory name="sklepyPU" persistence-unit-name="sklepyPU"/>

 <persistence:managed-persistence-context name="em"
 auto-create="true"
 entity-manager-factory="#{sklepyPU}"/>

 <transaction:ejb-transaction />


</components>