Raghu T [https://community.jboss.org/people/raghu88] created the discussion "when i logined (1st time) to my project it is giving the error....but 2nd time it is not giving such type of error" To view the discussion, visit: https://community.jboss.org/message/754776#754776 -------------------------------------------------------------- i am getting the following error.......i recently changed to jboss6.1 from 4.2.2...in 4.2.2 it is working fine but it's not working on 6.1 for the first time only(after server starts).....pls suggest me if any solution...thanks 17:15:19,738 INFO  [STDOUT] /userLogin.do 17:15:20,008 WARN  [org.jboss.resource.connectionmanager.JBossManagedConnectionPool] Throwable while attempting to get a new connection: null: org.jboss.resource.JBossResourceException: Could not create connection; - nested throwable: (org.jboss.resource.JBossResourceException: Apparently wrong driver class specified for URL: class: com.mysql.jdbc.Driver, url: jdbc:mysql://localhost:3306/mozartcost)           at org.jboss.resource.adapter.jdbc.local.LocalManagedConnectionFactory.getLocalManagedConnection(LocalManagedConnectionFactory.java:261) [:6.1.0.Final]           at org.jboss.resource.adapter.jdbc.local.LocalManagedConnectionFactory.createManagedConnection(LocalManagedConnectionFactory.java:215) [:6.1.0.Final]           at org.jboss.resource.connectionmanager.InternalManagedConnectionPool.createConnectionEventListener(InternalManagedConnectionPool.java:648) [:6.1.0.Final]           at org.jboss.resource.connectionmanager.InternalManagedConnectionPool.getConnection(InternalManagedConnectionPool.java:272) [:6.1.0.Final]           at org.jboss.resource.connectionmanager.JBossManagedConnectionPool$BasePool.getConnection(JBossManagedConnectionPool.java:690) [:6.1.0.Final]           at org.jboss.resource.connectionmanager.BaseConnectionManager2.getManagedConnection(BaseConnectionManager2.java:403) [:6.1.0.Final]           at org.jboss.resource.connectionmanager.TxConnectionManager.getManagedConnection(TxConnectionManager.java:414) [:6.1.0.Final]           at org.jboss.resource.connectionmanager.BaseConnectionManager2.allocateConnection(BaseConnectionManager2.java:496) [:6.1.0.Final]           at org.jboss.resource.connectionmanager.BaseConnectionManager2$ConnectionManagerProxy.allocateConnection(BaseConnectionManager2.java:941) [:6.1.0.Final]           at org.jboss.resource.adapter.jdbc.WrapperDataSource.getConnection(WrapperDataSource.java:89) [:6.1.0.Final]           at com.zyom.webclient.util.ConnectionString.getConnection(ConnectionString.java:74) [:]           at com.zyom.webclient.util.DBHelper.isValidUser(DBHelper.java:69) [:]           at com.zyom.struts.action.UserLoginAction.execute(UserLoginAction.java:67) [:]           at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:419) [:1.2.7]           at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224) [:1.2.7]           at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194) [:1.2.7]           at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432) [:1.2.7]           at javax.servlet.http.HttpServlet.service(HttpServlet.java:754) [:1.0.0.Final]           at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) [:1.0.0.Final]           at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:324) [:6.1.0.Final]           at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:242) [:6.1.0.Final]           at com.zyom.security.LoginMonitorFilter.doFilter(LoginMonitorFilter.java:67) [:]           at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:274) [:6.1.0.Final]           at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:242) [:6.1.0.Final]           at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275) [:6.1.0.Final]           at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) [:6.1.0.Final]           at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:181) [:6.1.0.Final]           at org.jboss.modcluster.catalina.CatalinaContext$RequestListenerValve.event(CatalinaContext.java:285) [:1.1.0.Final]           at org.jboss.modcluster.catalina.CatalinaContext$RequestListenerValve.invoke(CatalinaContext.java:261) [:1.1.0.Final]           at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:88) [:6.1.0.Final]           at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:100) [:6.1.0.Final]           at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:159) [:6.1.0.Final]           at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) [:6.1.0.Final]           at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158) [:6.1.0.Final]           at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) [:6.1.0.Final]           at org.jboss.web.tomcat.service.request.ActiveRequestResponseCacheValve.invoke(ActiveRequestResponseCacheValve.java:53) [:6.1.0.Final]           at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:362) [:6.1.0.Final]           at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) [:6.1.0.Final]           at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:654) [:6.1.0.Final]           at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:951) [:6.1.0.Final]           at java.lang.Thread.run(Thread.java:619) [:1.6.0_13] Caused by: org.jboss.resource.JBossResourceException: Apparently wrong driver class specified for URL: class: com.mysql.jdbc.Driver, url: jdbc:mysql://localhost:3306/mozartcost           at org.jboss.resource.adapter.jdbc.local.LocalManagedConnectionFactory.getDriver(LocalManagedConnectionFactory.java:541) [:6.1.0.Final]           at org.jboss.resource.adapter.jdbc.local.LocalManagedConnectionFactory.getLocalManagedConnection(LocalManagedConnectionFactory.java:228) [:6.1.0.Final]           ... 40 more 17:15:20,015 INFO  [STDOUT] org.jboss.util.NestedSQLException: Unable to get managed connection for jdbc/zyomCost; - nested throwable: (javax.resource.ResourceException: Unable to get managed connection for jdbc/zyomCost) -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/754776#754776] Start a new discussion in JBoss 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