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Created June 25, 2012 19:39
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persistence.xml MySQL settings
<persistence xmlns=""
<persistence-unit name="org.hibernate.tutorial.jpa" transaction-type="RESOURCE_LOCAL">
Persistence unit for the JPA tutorial of the Hibernate Getting Started Guide
<property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver" />
<property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/jpatestdb" />
<property name="javax.persistence.jdbc.user" value="root" />
<property name="javax.persistence.jdbc.password" value="root" />
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect" />
<property name="hibernate.show_sql" value="true" />
<property name="" value="create" />
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Where do you have to place the MySQL Driver Jar to work?

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Great question. I'm trying to work through this now as I believe it is the root cause of a namespace error I'm having. If you are using Maven you will probably need to put it there; otherwise, in your classpath.

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BTW... If you are using maven add this to your pom:

mysql mysql-connector-java 5.1.23

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Can I change transaction type to JTA?

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My web project is run on Glassfish server and using j2ee 7. But I couldn't connect to mySql server.

I config persistence.xml file like yours, it don't connect to mySql db but connect to derby

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@khacsinhcs you're probably using Netbeans. That problem is common to netbeans.

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mine is throwing an exception error like this "Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]"
what to do
i cannot able to connect to mysql database

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very good. thanks

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vithu4 commented Dec 19, 2017

if im using mysql in xampp do i need to put org.hibernate.dialect.MySQL5Dialec in the application properties of spring boot prj ?

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change the above line to


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bittap commented Sep 2, 2022

I executed that persistence.xml and then the Hibernate show me this message

23:50:44.846 [main] WARN org.hibernate.orm.connections.pooling - HHH10001002: Using Hibernate built-in connection pool (not for production use!)
Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver'. The driver is automatically registered via the SPI and manual loading of the driver class is generally unnecessary.

Therefore, I recommend to change this to the under line

<property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver" />


<property name="javax.persistence.jdbc.driver" value="com.mysql.cj.jdbc.Driver"/>

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