File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
The moose likes Object Relational Mapping and the fly likes JPA - problem with persistence.xml Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login
JavaRanch » Java Forums » Databases » Object Relational Mapping
Bookmark "JPA - problem with persistence.xml" Watch "JPA - problem with persistence.xml" New topic

JPA - problem with persistence.xml

Micra Micron

Joined: Feb 24, 2010
Posts: 2
Hello I'm new in JPA, and trying to run a simple example.
Eclipse is telling me that something is wrong with <provider> element. Please help me to understand what exactly is wrong there.

ERROR: "Description Resource Path Location Type
cvc-complex-type.2.4.a: Invalid content was found starting with element 'provider'. One of '{"":class, "":exclude-unlisted-classes, "":properties}' is expected. persistence.xml /SimpleJPATest/src/META-INF line 5 XML Problem"

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0" xmlns="" xmlns:xsi="" xsi:schemaLocation="">
<persistence-unit name="SimpleJPATest" transaction-type="RESOURCE_LOCAL">
<property name="toplink.logging.level" value="FINEST"/>
<property name="toplink.jdbc.driver" value="org.apache.derby.jdbc.ClientDriver"/>
<property name="toplink.jdbc.url" value="jdbc:derby://localhost:1527/sample;create=true"/>
<property name="toplink.jdbc.user" value="dali"/>
<property name="toplink.jdbc.password" value="dali"/>

Thank you in advance,
Micra Micron

Joined: Feb 24, 2010
Posts: 2
No one can advice ?
James Sutherland
Ranch Hand

Joined: Oct 01, 2007
Posts: 553
The order is important in the persistence.xml (and most XML files).

The schema is at,

You need to put the <provider> before the <class>.

TopLink : EclipseLink : Book:Java Persistence : Blog:Java Persistence Performance
I agree. Here's the link:
subject: JPA - problem with persistence.xml
It's not a secret anymore!