Dear Community,

I'm actually developing an swing application that should run on a PCs without any internet or network connection
the application entites are retrieved from a postgres database with hibernate/JPA.
Everything is fine when the App is started inside eclipse/STS. Then I generate a runnable jar with all dependend libs
with export -> runnable jar for tha isolated target pc

when I start the App on the target pc > java -jar -<jarname> the App crashed:


13374 [main] WARN org.hibernate.ejb.packaging.PersistenceXmlLoader - Warning par
sing XML: XML InputStream(14) schema_reference.4: Failed to read schema document
'http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd', because 1) could
not find the document; 2) the document could not be read; 3) the root element o
f the document is not <xsd:schema>.
Initial EntityManagerFactory creation failed.javax.persistence.PersistenceExcept
ion: No Persistence provider for EntityManager named AppDemo: Provider named org
.hibernate.ejb.HibernatePersistence threw unexpected exception at create EntityM
anagerFactory:
javax.persistence.PersistenceException
javax.persistence.PersistenceException: Unable to configure EntityManagerFactory

at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:
265)
at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(Hib
ernatePersistence.java:125)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.
java:110)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.
java:83)
at util.JPAUtil.<clinit>(JPAUtil.java:19)
at main.program.createAndWriteEntities(program.java:93)
at main.program.main(program.java:55)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)


that how my persistence.xml looks like:

<?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="AppDemo">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<mapping-file>model/patient.hbm.xml</mapping-file>
<properties>
<property name="hibernate.dialect" value="org.hibernate.dialect.PostgreSQLDialect"/>
<property name="hibernate.hbm2ddl.auto" value="none"/>
<property name="hibernate.show_sql" value="true" />
<property name="hibernate.default_schema" value="patienten"/>
<property name="hibernate.connection.driver_class" value="org.postgresql.Driver"/>
<property name="hibernate.connection.url" value="jdbc:postgresql://localhost:5432/postgres"/>
<property name="hibernate.connection.user" value="postgres"/>
<property name="hibernate.connection.password" value="ligeti"/>
</properties>
</persistence-unit>
</persistence>


Any idea? Thank for any hint.

Kagel