Hi All. I am stuck in a peculiar problem and struggling with it. I have a created a standalone program in Java that accesses a database through a DataSource which I have configured in JBoss AS. I am trying to access the database using JNDI. I have a program by the name of SaveExample | private static Context jndiContext; | | public static void main(String[] args) { | // TODO Auto-generated method stub | | | Session session = null; | | try{ | System.out.println("Before Session Factory Configuration. !!!"); | | SessionFactory sf = new Configuration().configure().buildSessionFactory(); | | | jndiContext = new InitialContext(); | | sf = (SessionFactory)jndiContext.lookup("java:MySqlDS"); | | | session = sf.openSession(); | | System.out.println("After Session Factory Configuration. !!!"); | | | | }catch(Exception e){ | e.printStackTrace(); | }finally{ | session.flush(); | session.close(); | } | | } | | hibernate.cfg.xml -------------------- | <hibernate-configuration> | | <session-factory> | | <property name="hibernate.connection.datasource">MySqlDS</property> | <property name="hibernate.session_factory_name">java:Mydatabase</property> | <property name="hibernate.jndi.url"></property> | <property name="hibernate.jndi.class"></property> | <property name="hibernate.connection.username"></property> | <property name="hibernate.connection.password"></property> | | <property name="show_sql">true</property> | <property name="format_sql">true</property> | | <!-- Show and print nice SQL on stdout. --> | <property name="dialect">org.hibernate.dialect.MySQLDialect</property> | <property name="hibernate.hbm2ddl.auto">update</property> | | <!-- List of XML Mapping files --> | <mapping resource="contact.hbm.xml"/> | <!-- <mapping resource="address.hbm.xml"/> --> | | </session-factory> | | </hibernate-configuration> | | I have put the lib file mysql-connector-java-5.1.5-bin.jar in the server\default\lib folder of JBoss and I have put the mysql-ds.xml file in server\default\deploy directory of JBoss. mysql-ds.xml --------------- | | <datasources> | <local-tx-datasource> | <jndi-name>MySqlDS</jndi-name> | <connection-url>jdbc:mysql://localhost:3306/jbossdb</connection-url> | <!-- Added by me for configuting a data source for remote usage --> | <use-java-context>false</use-java-context> | <driver-class>com.mysql.jdbc.Driver</driver-class> | <user-name>root</user-name> | <password>root</password> | <exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.MySQLExceptionSorter</exception-sorter-class-name> | <!-- should only be used on drivers after 3.22.1 with "ping" support | <valid-connection-checker-class-name>org.jboss.resource.adapter.jdbc.vendor.MySQLValidConnectionChecker</valid-connection-checker-class-name> | --> | <!-- sql to call when connection is created | <new-connection-sql>some arbitrary sql</new-connection-sql> | --> | <!-- sql to call on an existing pooled connection when it is obtained from pool - MySQLValidConnectionChecker is preferred for newer drivers | <check-valid-connection-sql>some arbitrary sql</check-valid-connection-sql> | --> | | <!-- corresponding type-mapping in the standardjbosscmp-jdbc.xml --> | <metadata> | <type-mapping>mySQL</type-mapping> | </metadata> | </local-tx-datasource> | </datasources> | | | Exception ----------- | | Before Session Factory Configuration. !!! | log4j:WARN No appenders could be found for logger (org.hibernate.cfg.Environment). | log4j:WARN Please initialize the log4j system properly. | org.hibernate.HibernateException: Could not find datasource | at org.hibernate.connection.DatasourceConnectionProvider.configure(DatasourceConnectionProvider.java:56) | at org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:124) | at org.hibernate.connection.ConnectionProviderFactory.newConnectionProvider(ConnectionProviderFactory.java:56) | at org.hibernate.cfg.SettingsFactory.createConnectionProvider(SettingsFactory.java:414) | at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:62) | at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:2009) | at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1292) | at com.example.jndi.JNDIExample.main(JNDIExample.java:27) | Caused by: javax.naming.NoInitialContextException: Cannot instantiate class: [Root exception is java.lang.ClassNotFoundException: ] | at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:657) | at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:247) | at javax.naming.InitialContext.init(InitialContext.java:223) | at javax.naming.InitialContext.<init>(InitialContext.java:197) | at org.hibernate.util.NamingHelper.getInitialContext(NamingHelper.java:28) | at org.hibernate.connection.DatasourceConnectionProvider.configure(DatasourceConnectionProvider.java:52) | ... 7 more | Caused by: java.lang.ClassNotFoundException: | at java.lang.Class.forName0(Native Method) | at java.lang.Class.forName(Class.java:242) | at com.sun.naming.internal.VersionHelper12.loadClass(VersionHelper12.java:42) | at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:654) | ... 12 more | Exception in thread "main" java.lang.NullPointerException | at com.example.jndi.JNDIExample.main(JNDIExample.java:44) | | My problem is that the program (SaveExample.java) in Eclipse is running as a Java Application and Jboss server is running in another console window. So how could I make them connect to each other so that they the application program can recognize the datasource and not given Could not find datasource exception. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4165498#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...