Exception while deploying the bean

[Rakesh Rajagopalan]

Hi All,

Im new to EJB3. I developed a code with a simple Entity Bean and Session Bean facade. Im using JBoss 5.0.0 Candidate Release 2 as the Application Server. Im always getting an exception. The stack trace of the exception, the codes are attached below. Please help me out.

1. The entity class:
---------------------

package foo;
import java.io.Serializable;
import javax.persistence.*;
 
@Entity
@Table(name="book")
@SequenceGenerator(name = "book_sequence", sequenceName = "book_id_seq")
public class Book implements Serializable {
       private static final long serialVersionUID = 7422574264557894633L;
       private Integer id;
       private String title;
       private String author;
       public Book() {
              this.title = title;
              this.author = author;
       }
       @Override
       public String toString() {
              return "Book: " + getId() + " Title " + getTitle() + 
              " Author " + getAuthor();
       }
       public String getAuthor() {
              return author;
       }
       public void setAuthor(String author) {
              this.author = author;
       }
       @Id
       @GeneratedValue(strategy = GenerationType.SEQUENCE, 
       generator = "book_sequence")
       public Integer getId() {
              return id;
       }
       public void setId(Integer id) {
              this.id = id;
       }
       public String getTitle() {
              return title;
       }
       public void setTitle(String title) {
              this.title = title;
              super();
       }
       public Book(Integer id, String title, String author) {
              super();
              this.id = id;
       }
}

2. Stateless Session Bean class:
--------------------------------

package foo;
import java.util.*;
import javax.ejb.Stateless;
import javax.persistence.*;
@Stateless
public class BookTestBean implements BookTestBeanRemote {
         @PersistenceContext
         EntityManager em;
         public static final String RemoteJNDIName =  
         BookTestBean.class.getSimpleName() +
         "/remote";
         public static final String LocalJNDIName =  
         BookTestBean.class.getSimpleName() +
         "/local";
         public void test() {
              Book book = new Book(null, "My first bean  
              book", "ABC");
              em.persist(book);
              Book book2 = new Book(null, "another book", "ABC");
              em.persist(book2);
              Book book3 = new Book(null, "EJB 3 developer guide",
              "ABC");
              em.persist(book3);
              System.out.println("list some books");
              List someBooks = em.createQuery("from Book b where  
              b.author=:name")
              .setParameter("name", "ABC").getResultList();
              for (Iterator iter = someBooks.iterator(); iter.hasNext()  :wink:  
              {
                     Book element = (Book) iter.next();
                     System.out.println(element);
              }
              System.out.println("List all books");
              List allBooks = em.createQuery("from Book").getResultList();
              for (Iterator iter = allBooks.iterator(); iter.hasNext()  :wink:  
              {
                     Book element = (Book) iter.next();
                     System.out.println(element);
              }
              System.out.println("delete a book");
              em.remove(book2);
              System.out.println("List all books");
              allBooks = em.createQuery("from Book").getResultList();
              for (Iterator iter = allBooks.iterator(); iter.hasNext()  :wink:   
              {
                     Book element = (Book) iter.next();
                     System.out.println(element);
              }
       }
}

3. The component Interface:
---------------------------

package foo;
import javax.ejb.Remote;
@Remote
public interface BookTestBeanRemote {
       public void test();
}

4. persistence.xml:
-------------------

<persistence>
     <persistence-unit name="FirstEjb3Tutorial">
            <jta-data-source>java:/ejb3ProjectDS</jta-data-source>
            <properties>
                   <property name="hibernate.hbm2ddl.auto"
                   value="create-drop"/>
            </properties>
     </persistence-unit>
</persistence>

The, I jar-ed them into a jar file and placed it under %JBOSS_HOME%\server\default\deploy folder.Then I got this exception:

---------------------------------------------------------------------------
14:21:40,578 ERROR [AbstractKernelController] Error installing to Parse: name=vf
szip:/C:/jboss-5.0.0/server/default/deploy/FirstEjb3Tutorial.jar state=Not Insta
lled mode=Manual requiredState=Parse
org.jboss.deployers.spi.DeploymentException: Error creating managed object for v
fszip:/C:/jboss-5.0.0/server/default/deploy/FirstEjb3Tutorial.jar
at org.jboss.deployers.spi.DeploymentException.rethrowAsDeploymentExcept
ion(DeploymentException.java:49)
at org.jboss.deployers.spi.deployer.helpers.AbstractParsingDeployerWithO
utput.createMetaData(AbstractParsingDeployerWithOutput.java:343)
at org.jboss.deployers.spi.deployer.helpers.AbstractParsingDeployerWithO
utput.createMetaData(AbstractParsingDeployerWithOutput.java:303)
at org.jboss.deployers.spi.deployer.helpers.AbstractParsingDeployerWithO
utput.createMetaData(AbstractParsingDeployerWithOutput.java:275)
at org.jboss.deployers.spi.deployer.helpers.AbstractParsingDeployerWithO
utput.deploy(AbstractParsingDeployerWithOutput.java:236)
at org.jboss.deployers.plugins.deployers.DeployerWrapper.deploy(Deployer
Wrapper.java:169)
at org.jboss.deployers.plugins.deployers.DeployersImpl.doDeploy(Deployer
sImpl.java:1285)
at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFi
rst(DeployersImpl.java:1003)
at org.jboss.deployers.plugins.deployers.DeployersImpl.install(Deployers
Impl.java:944)
at org.jboss.dependency.plugins.AbstractControllerContext.install(Abstra
ctControllerContext.java:348)
at org.jboss.dependency.plugins.AbstractController.install(AbstractContr
oller.java:1598)
at org.jboss.dependency.plugins.AbstractController.incrementState(Abstra
ctController.java:934)
at org.jboss.dependency.plugins.AbstractController.resolveContexts(Abstr
actController.java:1062)
at org.jboss.dependency.plugins.AbstractController.resolveContexts(Abstr
actController.java:984)
at org.jboss.dependency.plugins.AbstractController.change(AbstractContro
ller.java:822)
at org.jboss.dependency.plugins.AbstractController.change(AbstractContro
ller.java:553)
at org.jboss.deployers.plugins.deployers.DeployersImpl.process(Deployers
Impl.java:627)
at org.jboss.deployers.plugins.main.MainDeployerImpl.process(MainDeploye
rImpl.java:541)
at org.jboss.system.server.profileservice.ProfileServiceBootstrap.loadPr
ofile(ProfileServiceBootstrap.java:265)
at org.jboss.system.server.profileservice.ProfileServiceBootstrap.start(
ProfileServiceBootstrap.java:143)
at org.jboss.bootstrap.AbstractServerImpl.start(AbstractServerImpl.java:
409)
at org.jboss.Main.boot(Main.java:209)
at org.jboss.Main$1.run(Main.java:544)
at java.lang.Thread.run(Thread.java:619)
Caused by: org.jboss.xb.binding.JBossXBException: Failed to parse source: Failed
to resolve schema nsURI= location=persistence
at org.jboss.xb.binding.parser.sax.SaxJBossXBParser.parse(SaxJBossXBPars
er.java:203)
at org.jboss.xb.binding.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java
:168)
at org.jboss.deployers.vfs.spi.deployer.JBossXBDeployerHelper.parse(JBos
sXBDeployerHelper.java:199)
at org.jboss.deployers.vfs.spi.deployer.JBossXBDeployerHelper.parse(JBos
sXBDeployerHelper.java:170)
at org.jboss.deployers.vfs.spi.deployer.SchemaResolverDeployer.parse(Sch
emaResolverDeployer.java:132)
at org.jboss.deployers.vfs.spi.deployer.SchemaResolverDeployer.parse(Sch
emaResolverDeployer.java:118)
at org.jboss.deployers.vfs.spi.deployer.AbstractVFSParsingDeployer.parse
AndInit(AbstractVFSParsingDeployer.java:256)
at org.jboss.deployers.vfs.spi.deployer.AbstractVFSParsingDeployer.parse
(AbstractVFSParsingDeployer.java:188)
at org.jboss.deployers.spi.deployer.helpers.AbstractParsingDeployerWithO
utput.createMetaData(AbstractParsingDeployerWithOutput.java:329)
... 22 more
Caused by: org.jboss.xb.binding.JBossXBRuntimeException: Failed to resolve schem
a nsURI= location=persistence
at org.jboss.xb.binding.sunday.unmarshalling.SundayContentHandler.startE
lement(SundayContentHandler.java:313)
at org.jboss.xb.binding.parser.sax.SaxJBossXBParser$DelegatingContentHan
dler.startElement(SaxJBossXBParser.java:401)
at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Sour
ce)
at org.apache.xerces.impl.xs.XMLSchemaValidator.startElement(Unknown Sou
rce)
at org.apache.xerces.xinclude.XIncludeHandler.startElement(Unknown Sourc
e)
at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanStartElement(Unkn
own Source)
at org.apache.xerces.impl.XMLNSDocumentScannerImpl$NSContentDispatcher.s
canRootElementHook(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContent
Dispatcher.dispatch(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Un
known Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Sour
ce)
at org.jboss.xb.binding.parser.sax.SaxJBossXBParser.parse(SaxJBossXBPars
er.java:199)
... 30 more
---------------------------------------------------------------------------
Kindly tell me what Im missing or what is going wrong.

Kind Regards,
Rakesh.R
[ November 18, 2008: Message edited by: Rakesh Rajagopalan ]

[Jaikiran Pai]

Caused by: org.jboss.xb.binding.JBossXBException: Failed to parse source: Failed to resolve schema nsURI= location=persistence

The JBoss 5 version is strict in validating xml files. Your persistence.xml should be changed to:

<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 <a href="http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd"" target="_blank" rel="nofollow">http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd"</a>
    version="1.0">
<persistence-unit name="FirstEjb3Tutorial">
<jta-data-source>java:/ejb3ProjectDS</jta-data-source>
<properties>
<property name="hibernate.hbm2ddl.auto"
value="create-drop"/>
</properties>
</persistence-unit>
</persistence>

[Rakesh Rajagopalan]

Thank you so much Jai Kiran.. The reply was almost instantaneous!! Thanks a tonne!!!

[miracles oralero]

I have the same problem with excercise o'really enterprise javabeas 3.0 titan
jboss 4.x woks!

not in jboss 5.0 and 5.1

in persistence.xml

  <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">  
.... 

sometimes also add class need @PersistenceContext

 ..  <jta-data-source>java:/DefaultDS</jta-data-source>
      <class>com.titan.travelagent.TravelAgentBean</class>
      <properties> ... 

[Somnath Mallick]

Sorry to awake an old thread! But even i am facing problems what miracles oralero mentioned. I am trying out the same example and i get the same type of error, didn't want to start a fresh thread for the same issue:

15:23:55,132 ERROR [AbstractKernelController] Error installing to Parse: name=vfsfile:/E:/Workspace/.metadata/.plugins/org.jboss.ide.eclipse.as.core/JBoss_5.1_Runtime_Server/deploy/TitanCabin.jar/ state=Not Installed mode=Manual requiredState=Parse
org.jboss.deployers.spi.DeploymentException: Error creating managed object for vfsfile:/E:/Workspace/.metadata/.plugins/org.jboss.ide.eclipse.as.core/JBoss_5.1_Runtime_Server/deploy/TitanCabin.jar/
	at org.jboss.deployers.spi.DeploymentException.rethrowAsDeploymentException(DeploymentException.java:49)
	at org.jboss.deployers.spi.deployer.helpers.AbstractParsingDeployerWithOutput.createMetaData(AbstractParsingDeployerWithOutput.java:362)
	at org.jboss.deployers.spi.deployer.helpers.AbstractParsingDeployerWithOutput.createMetaData(AbstractParsingDeployerWithOutput.java:322)
	at org.jboss.deployers.spi.deployer.helpers.AbstractParsingDeployerWithOutput.createMetaData(AbstractParsingDeployerWithOutput.java:294)
	at org.jboss.deployers.spi.deployer.helpers.AbstractParsingDeployerWithOutput.deploy(AbstractParsingDeployerWithOutput.java:234)
	at org.jboss.deployers.plugins.deployers.DeployerWrapper.deploy(DeployerWrapper.java:171)
	at org.jboss.deployers.plugins.deployers.DeployersImpl.doDeploy(DeployersImpl.java:1439)
	at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1157)
	at org.jboss.deployers.plugins.deployers.DeployersImpl.install(DeployersImpl.java:1098)
	at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
	at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1631)
	at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:934)
	at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1082)
	at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:984)
	at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:822)
	at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:553)
	at org.jboss.deployers.plugins.deployers.DeployersImpl.process(DeployersImpl.java:781)
	at org.jboss.deployers.plugins.main.MainDeployerImpl.process(MainDeployerImpl.java:702)
	at org.jboss.system.server.profileservice.repository.MainDeployerAdapter.process(MainDeployerAdapter.java:117)
	at org.jboss.system.server.profileservice.hotdeploy.HDScanner.scan(HDScanner.java:362)
	at org.jboss.system.server.profileservice.hotdeploy.HDScanner.run(HDScanner.java:255)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
	at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317)
	at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:181)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:205)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:619)
Caused by: org.jboss.xb.binding.JBossXBException: Failed to parse source: Failed to resolve schema nsURI= location=persistence
	at org.jboss.xb.binding.parser.sax.SaxJBossXBParser.parse(SaxJBossXBParser.java:203)
	at org.jboss.xb.binding.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:168)
	at org.jboss.xb.util.JBossXBHelper.parse(JBossXBHelper.java:189)
	at org.jboss.xb.util.JBossXBHelper.parse(JBossXBHelper.java:166)
	at org.jboss.deployers.vfs.spi.deployer.SchemaResolverDeployer.parse(SchemaResolverDeployer.java:137)
	at org.jboss.deployers.vfs.spi.deployer.SchemaResolverDeployer.parse(SchemaResolverDeployer.java:121)
	at org.jboss.deployers.vfs.spi.deployer.AbstractVFSParsingDeployer.parseAndInit(AbstractVFSParsingDeployer.java:256)
	at org.jboss.deployers.vfs.spi.deployer.AbstractVFSParsingDeployer.parse(AbstractVFSParsingDeployer.java:188)
	at org.jboss.deployers.spi.deployer.helpers.AbstractParsingDeployerWithOutput.createMetaData(AbstractParsingDeployerWithOutput.java:348)
	... 28 more
Caused by: org.jboss.xb.binding.JBossXBRuntimeException: Failed to resolve schema nsURI= location=persistence
	at org.jboss.xb.binding.sunday.unmarshalling.SundayContentHandler.startElement(SundayContentHandler.java:281)
	at org.jboss.xb.binding.parser.sax.SaxJBossXBParser$DelegatingContentHandler.startElement(SaxJBossXBParser.java:401)
	at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Source)
	at org.apache.xerces.impl.xs.XMLSchemaValidator.startElement(Unknown Source)
	at org.apache.xerces.xinclude.XIncludeHandler.startElement(Unknown Source)
	at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown Source)
	at org.apache.xerces.impl.XMLNSDocumentScannerImpl$NSContentDispatcher.scanRootElementHook(Unknown Source)
	at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
	at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
	at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
	at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
	at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
	at org.jboss.xb.binding.parser.sax.SaxJBossXBParser.parse(SaxJBossXBParser.java:199)
	... 36 more
15:23:55,210 INFO  [Ejb3DependenciesDeployer] Encountered deployment AbstractVFSDeploymentContext@2478346{vfsfile:/E:/Workspace/.metadata/.plugins/org.jboss.ide.eclipse.as.core/JBoss_5.1_Runtime_Server/deploy/TitanCabin1.jar/}
15:23:55,210 INFO  [Ejb3DependenciesDeployer] Encountered deployment AbstractVFSDeploymentContext@2478346{vfsfile:/E:/Workspace/.metadata/.plugins/org.jboss.ide.eclipse.as.core/JBoss_5.1_Runtime_Server/deploy/TitanCabin1.jar/}
15:23:55,272 INFO  [JBossASKernel] Created KernelDeployment for: TitanCabin1.jar
15:23:55,272 INFO  [JBossASKernel] installing bean: jboss.j2ee:jar=TitanCabin1.jar,name=TravelAgentBean,service=EJB3
15:23:55,272 INFO  [JBossASKernel]   with dependencies:
15:23:55,272 INFO  [JBossASKernel]   and demands:
15:23:55,272 INFO  [JBossASKernel] 	persistence.unit:unitName=#titan
15:23:55,272 INFO  [JBossASKernel] 	jboss.ejb:service=EJBTimerService
15:23:55,272 INFO  [JBossASKernel]   and supplies:
15:23:55,272 INFO  [JBossASKernel] 	jndi:TravelAgentBean/remote
15:23:55,272 INFO  [JBossASKernel] 	jndi:TravelAgentBean/remote-com.titan.travelagent.TravelAgentRemote
15:23:55,272 INFO  [JBossASKernel] 	Class:com.titan.travelagent.TravelAgentRemote
15:23:55,272 INFO  [JBossASKernel] Added bean(jboss.j2ee:jar=TitanCabin1.jar,name=TravelAgentBean,service=EJB3) to KernelDeployment of: TitanCabin1.jar
15:23:55,272 INFO  [EJB3EndpointDeployer] Deploy AbstractBeanMetaData@1849ee4{name=jboss.j2ee:jar=TitanCabin1.jar,name=TravelAgentBean,service=EJB3_endpoint bean=org.jboss.ejb3.endpoint.deployers.impl.EndpointImpl properties=[container] constructor=null autowireCandidate=true}
15:23:55,335 WARN  [HDScanner] Failed to process changes
org.jboss.deployers.client.spi.IncompleteDeploymentException: Summary of incomplete deployments (SEE PREVIOUS ERRORS FOR DETAILS):

*** DEPLOYMENTS IN ERROR: Name -> Error

vfsfile:/E:/Workspace/.metadata/.plugins/org.jboss.ide.eclipse.as.core/JBoss_5.1_Runtime_Server/deploy/TitanCabin.jar/ -> org.jboss.deployers.spi.DeploymentException: Error creating managed object for vfsfile:/E:/Workspace/.metadata/.plugins/org.jboss.ide.eclipse.as.core/JBoss_5.1_Runtime_Server/deploy/TitanCabin.jar/


DEPLOYMENTS IN ERROR:
  Deployment "vfsfile:/E:/Workspace/.metadata/.plugins/org.jboss.ide.eclipse.as.core/JBoss_5.1_Runtime_Server/deploy/TitanCabin.jar/" is in error due to the following reason(s): org.jboss.xb.binding.JBossXBRuntimeException: Failed to resolve schema nsURI= location=persistence

	at org.jboss.deployers.plugins.deployers.DeployersImpl.checkComplete(DeployersImpl.java:993)
	at org.jboss.deployers.plugins.deployers.DeployersImpl.checkComplete(DeployersImpl.java:939)
	at org.jboss.deployers.plugins.main.MainDeployerImpl.checkComplete(MainDeployerImpl.java:873)
	at org.jboss.system.server.profileservice.repository.MainDeployerAdapter.checkComplete(MainDeployerAdapter.java:128)
	at org.jboss.system.server.profileservice.hotdeploy.HDScanner.scan(HDScanner.java:369)
	at org.jboss.system.server.profileservice.hotdeploy.HDScanner.run(HDScanner.java:255)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
	at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317)
	at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:181)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:205)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:619)

Could you please provide a solution for this!
And the persistance namespace provided by Jaikiran shows an error!

[Jaikiran Pai]

Somnath Mallick wrote:
And the persistance namespace provided by Jaikiran shows an error!

Looks like the forum software messed up the contents of the code block in my reply.

Here's what the persistence.xml should contain:

<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">
...
</persistence>

[Somnath Mallick]

I meant the first one you gave:

<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 <a href="http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd"" target="_blank" rel="nofollow">http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd"</a>
    version="1.0">

My persistence XML is something like:

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0" 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_1_0.xsd">
	<persistence-unit name="titan">
   		<jta-data-source>java:/TitanDB</jta-data-source>
	</persistence-unit>
</persistence>

The namespace here is similar to the one you mentioned.

[Somnath Mallick]

When i copy paste your persistence.xml specification i get an error.. something like:
"No persistence unit defined"

Even my code blocks are giant text areas!!!

[Jaikiran Pai]

Somnath Mallick wrote:When i copy paste your persistence.xml specification i get an error.. something like:
"No persistence unit defined"

Please open a new thread, in an appropriate forum, with the details including the exception stacktrace.

[Somnath Mallick]

New thread created!
http://www.coderanch.com/t/465717/Object-Relational-Mapping/java/Failed-resolve-schema-nsURI-location