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Changes in persistence.xml causes IncompatibleClassChangeError error

When I change my persistence.xml to a JNDI lookup a IncompatibleClassChangeError is being thrown.
This is the one that is working
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:orm="http://java.sun.com/xml/ns/persistence/orm" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
version="2.0"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd http://java.sun.com/xml/ns/persistence/orm http://java.sun.com/xml/ns/persistence/orm_2_0.xsd">
<persistence-unit name="report-pu" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<jta-data-source>java:jboss/datasources/MySQLDS</jta-data-source>
<class>com.citi.listener.model.TATReportItem</class>
<exclude-unlisted-classes>true</exclude-unlisted-classes>
<properties>
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/>
<property name="hibernate.max_fetch_depth" value="3"/>
<property name="hibernate.hbm2ddl.auto" value="update"/>
<property name="hibernate.show_sql" value="false"/>
<property name="hibernate.id.new_generator_mappings" value="false"/>
<property name="hibernate.transaction.jta.platform" value="org.hibernate.service.jta.platform.internal.JBossAppServerJtaPlatform"/>
</properties>
</persistence-unit>
</persistence>
The one that causes the issue is
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:orm="http://java.sun.com/xml/ns/persistence/orm" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
version="2.0"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd http://java.sun.com/xml/ns/persistence/orm http://java.sun.com/xml/ns/persistence/orm_2_0.xsd">
<persistence-unit name="report-pu" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
<class>com.citi.listener.model.TATReportItem</class>
<exclude-unlisted-classes>true</exclude-unlisted-classes>
<properties>
<property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver" />
<property name="javax.persistence.jdbc.url" value="X" />
<property name="javax.persistence.jdbc.user" value="X" />
<property name="javax.persistence.jdbc.password" value="X" />
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect" />
</properties>
</persistence-unit>
</persistence>
It's not obvious to me why this is causing the issue?

Issue here was that the hibernate-entitymanager scope was not set to provided in the pom

Hibernate with Glassfish 4.1

I've setted up Hibernate on Glassfish 4.1 but I'm having problems with persistence.
I'm able to read data, but cannot write to BD (changes appear to not be commited).
My current persistent.xml looks like this:
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.1" 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://java.sun.com/xml/ns/persistence/persistence_2_1.xsd">
<persistence-unit name="myPU" transaction-type="JTA">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<jta-data-source>jdbc/myDataSource</jta-data-source>
<properties>
<property name="transaction.manager_lookup_class" value="org.hibernate.transaction.SunONETransactionManagerLookup"/>
<property name="hibernate.transaction.factory_class" value="org.hibernate.transaction.CMTTransactionFactory"/>
<property name="hibernate.transaction.jta.platform" value="org.hibernate.service.jta.platform.internal.SunOneJtaPlatform"/>
<property name="hibernate.dialect" value="org.hibernate.dialect.SQLServer2008Dialect"/>
</properties>
</persistence-unit>
</persistence>
My connection pool config on Glassfish is:
<jdbc-connection-pool datasource-classname="com.microsoft.sqlserver.jdbc.SQLServerDataSource" steady-pool-size="2" name="myPool" res-type="javax.sql.DataSource">
<property name="TrustServerCertificate" value="false"></property>
<property name="User" value="sa"></property>
<property name="LastUpdateCount" value="true"></property>
<property name="ResponseBuffering" value="adaptive"></property>
<property name="URL" value="jdbc:sqlserver://server\bd"></property>
<property name="XopenStates" value="false"></property>
<property name="PacketSize" value="8000"></property>
<property name="Password" value="mypass"></property>
<property name="ApplicationName" value="Microsoft JDBC Driver for SQL Server"></property>
<property name="DatabaseName" value="MyDB"></property>
<property name="Encrypt" value="false"></property>
<property name="LockTimeout" value="-1"></property>
<property name="SendStringParametersAsUnicode" value="true"></property>
<property name="MultiSubnetFailover" value="false"></property>
<property name="ApplicationIntent" value="readwrite"></property>
<property name="LoginTimeout" value="15"></property>
<property name="WorkstationID" value="My-MacBook-Pro.local"></property>
<property name="ServerName" value="xpto"></property>
<property name="PortNumber" value="1433"></property>
<property name="SelectMethod" value="direct"></property>
<property name="SendTimeAsDatetime" value="true"></property>
</jdbc-connection-pool>
Datasource config:
<jdbc-resource pool-name="myPool" jndi-name="jdbc/myDataSource"></jdbc-resource>
My EJB looks like this:
#PersistenceContext
private EntityManager em;
public void updateUser(User u) {
em.merge(u);
}
Any idea how I can fix that?
Thanks!

In my case, I was running the Hibernate 5 with tomcat and stop working when I changed to glassfish 4.1
The reason was the oldest jboss-logging.jar at: "YOUR_GLASSFISH_FOLDER/glassfish/modules"
Why? The hibernate 5 has dependency with the newest version of jboss-logging, and the glassfish uses the oldest version even if you declare inside your POM file the newest version. Actually I'm using:
org.jboss.logging jboss-logging 3.3.0.Final
Then I downloaded and replace the old .jar inside modules path and back to work, I spent 2 days trying to solve that and I hope it helps some future issues =D
I used this link to help me: https://medium.com/#mertcal/using-hibernate-5-on-payara-cc242212a5d6#.npq2hdprz

Could you please try the following configuration:
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0"
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_2_0.xsd">
<persistence-unit name="YOUR_PERSISTANCE_NAME" transaction-type="RESOURCE_LOCAL">
<provider>YOUR_PROVIDER</provider>
<!-- ENTITIES -->
<class>com.company.project....EntityA</class>
<class>com.company.project....EntityB</class>
<class>com.company.project....EntityC</class>
<properties>
<property name="javax.persistence.jdbc.url" value="YOUR_URL_TO_DB" />
<property name="javax.persistence.jdbc.driver" value="org.postgresql.Driver" />
<property name="javax.persistence.jdbc.user" value="USER" />
<property name="javax.persistence.jdbc.password" value="PASS" />
<property name="eclipselink.logging.level" value="INFO" />
<property name="eclipselink.target-database" value="PostgreSQL" />
</properties>
</persistence-unit>

Verify c3p0 running with JPA

I'm using JPA for my persistence for my project and don't really know anything about hibernate but most tutorials I follow have found to setup connection pooling use c3p0 and hibernate.
Heres my persistence.xml file
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.1" 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">
<persistence-unit name="Cinemango308PU" transaction-type="RESOURCE_LOCAL">
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<class>JPA.Ad</class>
<class>JPA.Photo</class>
<class>JPA.Theatre</class>
<class>JPA.Creditcard</class>
<class>JPA.Moviereview</class>
<class>JPA.Giftcard</class>
<class>JPA.Showtime</class>
<class>JPA.Ticket</class>
<class>JPA.Favoritetheatres</class>
<class>JPA.User</class>
<class>JPA.Actor</class>
<class>JPA.Movie</class>
<class>JPA.Theatrerewards</class>
<class>JPA.Payment</class>
<exclude-unlisted-classes>false</exclude-unlisted-classes>
<properties>
<property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:5432/cinemango>
<property name="javax.persistence.jdbc.user" value="xxxx"/>
<property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver"/>
<property name="javax.persistence.jdbc.password" value="xxxxxx"/>
<property name="javax.persistence.schema-generation.database.action" value="create"/>
<!-- Configuring Connection Pool -->
<property name="connection.provider_class" value="org.hibernate.connection.C3P0ConnectionProvider" />
<property name="hibernate.c3p0.max_size" value="5" />
<property name="hibernate.c3p0.min_size" value="0" />
<property name="hibernate.c3p0.acquire_increment" value="1" />
<property name="hibernate.c3p0.idle_test_period" value="300" />
<property name="hibernate.c3p0.max_statements" value="0" />
<property name="hibernate.c3p0.timeout" value="100" />
</properties>
</persistence-unit>
</persistence>
How do i test if the connection pooling is working? I don't see a log displayed to my output

Please find the logging configuration here http://www.mchange.com/projects/c3p0/#configuring_logging
There you can find how to switch on debug to see if pooling happens.

EclispseLink + MongoDB parallel transactions

Running very simple example in a multi-threading java 7 application:
em.getTransaction().begin();
SimpleObject simpleObject = ...;
em.persist(simpleObject);
em.getTransaction().commit();
causes following error:
java.lang.IllegalStateException: Exception Description: Transaction is currently active
Running in a one thread all is fine.
My persistence.xml settings:
<persistence version="2.1"
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">
<persistence-unit name="mongo" transaction-type="RESOURCE_LOCAL">
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<class>test\SimpleObject</class>
<exclude-unlisted-classes>false</exclude-unlisted-classes>
<properties>
<property name="eclipselink.target-database" value="org.eclipse.persistence.nosql.adapters.mongo.MongoPlatform" />
<property name="eclipselink.nosql.connection-spec" value="org.eclipse.persistence.nosql.adapters.mongo.MongoConnectionSpec" />
<property name="eclipselink.nosql.property.mongo.host" value="localhost" />
<property name="eclipselink.nosql.property.mongo.port" value="27017" />
<property name="eclipselink.nosql.property.mongo.db" value="test" />
<property name="eclipselink.logging.level" value="ALL" />
<property name="eclipselink.nosql.property.mongo.write-concern" value="MAJORITY" />
<property name="eclipselink.jpa.uppercase-column-names" value="true" />
</properties>
</persistence-unit>
</persistence>
Version of used libraries:
EclipseLink 2.5.2,
mongoDB 2.6.1,
jpa 2.1.0,
mongo-java-driver-2.12.2,
eclipse.persistence.nosql-2.5.1
Is there anything wrong?
Thank you!

Hibernate/JPA not validating against DB schema on startup

For some reason hibernate is not catching issues like mapping entities to tables that do not exist. My persistence.xml file looks like this...
<?xml version="1.0" encoding="UTF-8" ?>
<persistence 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" version="1.0">
<!-- A JPA Persistence Unit -->
<persistence-unit name="printLogixJpaUnit" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<class>com.printlogix.rp.server.domain.User</class>
<class>com.printlogix.rp.server.domain.UserImage</class>
<class>com.printlogix.rp.server.domain.TemplateInstance</class>
<class>com.printlogix.rp.server.domain.UserOrder</class>
<class>com.printlogix.rp.server.domain.OrderLineItem</class>
<class>com.printlogix.rp.server.domain.OrderStatus</class>
<class>com.printlogix.rp.server.domain.AgencyImage</class>
<class>com.printlogix.rp.server.domain.Agency</class>
<class>com.printlogix.rp.server.domain.Brokerage</class>
<class>com.printlogix.rp.server.domain.SystemTemplate</class>
<class>com.printlogix.rp.server.domain.TemplateType</class>
<class>com.printlogix.rp.server.domain.Product</class>
<class>com.printlogix.rp.server.domain.ProductDefinition</class>
<class>com.printlogix.rp.server.domain.ExpeditedAddress</class>
<class>com.printlogix.rp.server.domain.BrokerageUser</class>
<class>com.printlogix.rp.server.domain.StateProvince</class>
<class>com.printlogix.rp.server.domain.Country</class>
<class>com.printlogix.rp.server.domain.AwardClub</class>
<class>com.printlogix.rp.server.domain.SuperUser</class>
<class>com.printlogix.rp.server.domain.AgencyUser</class>
<class>com.printlogix.rp.server.domain.RememberMe</class>
<class>com.printlogix.rp.server.domain.PasswordResetRequest</class>
<class>com.printlogix.rp.server.domain.SystemTheme</class>
<exclude-unlisted-classes>true</exclude-unlisted-classes>
<properties>
<property name="hibernate.show_sql" value="true"/>
<!--Begin Credentials -->
<property name="hibernate.connection.url" value="jdbc:mysql://localhost/realtorprint_dev?autoReconnect=true"/>
<property name="hibernate.connection.username" value="test"/>
<property name="hibernate.connection.password" value="test"/>
<!--End Credentials -->
<property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver"/>
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5InnoDBDialect"/>
</properties>
</persistence-unit>
</persistence>

Try adding the property "hibernate.hbm2ddl.auto" with value of "validate":
<property name="hibernate.hbm2ddl.auto" value="validate"/>