OK, thanks. But, now the original problem appears again
SAX Parser class ---> org.apache.xerces.jaxp.SAXParserFactoryImpl javax.persistence.PersistenceException: Explicit persistence provider error(s) occurred for "event" after trying the following discovered implementations: org.apache.openjpa.persistence.PersistenceProviderImpl from provider: org.apache.openjpa.persistence.PersistenceProviderImpl at javax.persistence.Persistence.createPersistenceException(Persistence.java:244) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:186) at com.hp.p4000.db.DbConnect.main(DbConnect.java:31) Caused by: <openjpa-2.1.1-r422266:1148538 nonfatal general error> org.apache.openjpa.util.GeneralException: org.xml.sax.SAXNotRecognizedException: http://java.sun.com/xml/jaxp/properties/schemaLanguage at org.apache.openjpa.lib.meta.XMLMetaDataParser.parseNewResource(XMLMetaDataParser.java:396) at org.apache.openjpa.lib.meta.XMLMetaDataParser.parse(XMLMetaDataParser.java:334) at org.apache.openjpa.lib.meta.XMLMetaDataParser.parse(XMLMetaDataParser.java:311) at org.apache.openjpa.lib.meta.XMLMetaDataParser.parse(XMLMetaDataParser.java:284) at org.apache.openjpa.persistence.PersistenceProductDerivation$ConfigurationParser.parse(PersistenceProductDerivation.java:775) at org.apache.openjpa.persistence.PersistenceProductDerivation.parseResources(PersistenceProductDerivation.java:559) at org.apache.openjpa.persistence.PersistenceProductDerivation.load(PersistenceProductDerivation.java:525) at org.apache.openjpa.persistence.PersistenceProductDerivation.load(PersistenceProductDerivation.java:339) at org.apache.openjpa.persistence.PersistenceProviderImpl.createEntityManagerFactory(PersistenceProviderImpl.java:90) at org.apache.openjpa.persistence.PersistenceProviderImpl.createEntityManagerFactory(PersistenceProviderImpl.java:157) at org.apache.openjpa.persistence.PersistenceProviderImpl.createEntityManagerFactory(PersistenceProviderImpl.java:66) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:152) ... 1 more -- View this message in context: http://openjpa.208410.n2.nabble.com/problems-running-JPA-standalone-outside-of-container-tp6838028p6840817.html Sent from the OpenJPA Users mailing list archive at Nabble.com.