Jboss 4.2.2GA Jave: SDK 1.5 It seems to me that the problem is the application fails to get a database connection handle from the jboss server. But I am not sure whether it is caused by the fact that Jboss server is not running or the fact that the server config is wrong. Please help. 1112 [main] DEBUG org.jboss.util.NestedThrowable - org.jboss.util.NestedThrowable.parentTraceEnabled=true 1112 [main] DEBUG org.jboss.util.NestedThrowable - org.jboss.util.NestedThrowable.nestedTraceEnabled=false 1112 [main] DEBUG org.jboss.util.NestedThrowable - org.jboss.util.NestedThrowable.detectDuplicateNesting=true 1112 [main] ERROR com.wire.db.DataUtil - Exception caught in setupDataSource(): org.jboss.deployment.DeploymentException: ManagedConnectionFactory not set! 1134 [main] ERROR com.wire.db.DataException - Exception thrown while initializing DataSource org.jboss.deployment.DeploymentException: ManagedConnectionFactory not set! at org.jboss.resource.connectionmanager.ManagedConnectionPool.startService(ManagedConnectionPool.java:291) at com.wire.db.ManagedConnectionPoolProxy.doStartService(DataUtil.java:718) at com.wire.db.DataUtil.setupDataSource(DataUtil.java:358) at com.wire.db.DataUtil.setupDataSource(DataUtil.java:241) at com.wire.db.DataUtil.setupDataSource(DataUtil.java:140) at com.wire.db.DbConnUtil.getContext(DbConnUtil.java:109) at com.wire.db.DbConnUtil.getConnection(DbConnUtil.java:40) at com.wire.db.DbConn.getConnection(DbConn.java:180) 9563 [main] ERROR com.wire.db.DbConn - com.wire.db.DbConn::getConnection: Failed to get a connection. com.wire.db.DataException: Exception thrown while initializing DataSource at com.wire.db.DataUtil.setupDataSource(DataUtil.java:474) at com.wire.db.DataUtil.setupDataSource(DataUtil.java:241) at com.wire.db.DataUtil.setupDataSource(DataUtil.java:140) at com.wire.db.DbConnUtil.getContext(DbConnUtil.java:109) at com.wire.db.DbConnUtil.getConnection(DbConnUtil.java:40) at com.wire.db.DbConn.getConnection(DbConn.java:180) Caused by: org.jboss.deployment.DeploymentException: ManagedConnectionFactory not set! at org.jboss.resource.connectionmanager.ManagedConnectionPool.startService(ManagedConnectionPool.java:291) at com.wire.db.ManagedConnectionPoolProxy.doStartService(DataUtil.java:718) at com.wire.db.DataUtil.setupDataSource(DataUtil.java:358) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4130439#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...