Db Connection of DataSource problem in pentaho integration with liferay?

Hi All,

I am trying to integrate pentaho with liferay6.0.6. I am using mysql as a database for liferay and pentaho.
To setup pentaho with liferay i followed this wiki(http://wiki.pentaho.com/pages/viewpa...pageId=9798319). But when i upload the pentaho.war through plugin installer in liferay. I am getting below error. Can any one help me.

Error:
org.quartz.SchedulerConfigException: Failure occured during job recovery. [See nested exception: org.quartz.JobPersistenceException: Failed to obtain DB connection from data source 'myDS': java.sql.SQLException: Could not retrieve datasource via JNDI url 'java:comp/env/jdbc/Quartz' org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null' [See nested exception: java.sql.SQLException: Could not retrieve datasource via JNDI url 'java:comp/env/jdbc/Quartz' org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null']]
at org.quartz.impl.jdbcjobstore.JobStoreSupport.initialize(JobStoreSupport.java:493)
at org.quartz.impl.jdbcjobstore.JobStoreTX.initialize(JobStoreTX.java:68)
at org.quartz.impl.StdSchedulerFactory.instantiate(StdSchedulerFactory.java:1010)
at org.quartz.impl.StdSchedulerFactory.getScheduler(StdSchedulerFactory.java:1152)
at org.pentaho.plugin.quartz.QuartzSystemListener.startup(QuartzSystemListener.java:73)
at org.pentaho.core.system.PentahoSystem.createSystemListeners(PentahoSystem.java:389)
at org.pentaho.core.system.PentahoSystem.init(PentahoSystem.java:322)
at org.pentaho.core.system.PentahoSystem.init(PentahoSystem.java:212)
at org.pentaho.core.system.SolutionContextListener.contextInitialized(SolutionContextListener.java:121)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4135)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4630)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1041)
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:964)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:502)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1277)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:321)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:785)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:445)
at org.apache.catalina.core.StandardService.start(StandardService.java:519)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:581)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
* Nested Exception (Underlying Cause) ---------------
org.quartz.JobPersistenceException: Failed to obtain DB connection from data source 'myDS': java.sql.SQLException: Could not retrieve datasource via JNDI url 'java:comp/env/jdbc/Quartz' org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null' [See nested exception: java.sql.SQLException: Could not retrieve datasource via JNDI url 'java:comp/env/jdbc/Quartz' org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null']
at org.quartz.impl.jdbcjobstore.JobStoreSupport.getConnection(JobStoreSupport.java:575)
at org.quartz.impl.jdbcjobstore.JobStoreTX.cleanVolatileTriggerAndJobs(JobStoreTX.java:109)
at org.quartz.impl.jdbcjobstore.JobStoreSupport.initialize(JobStoreSupport.java:491)
at org.quartz.impl.jdbcjobstore.JobStoreTX.initialize(JobStoreTX.java:68)
at org.quartz.impl.StdSchedulerFactory.instantiate(StdSchedulerFactory.java:1010)
at org.quartz.impl.StdSchedulerFactory.getScheduler(StdSchedulerFactory.java:1152)
at org.pentaho.plugin.quartz.QuartzSystemListener.startup(QuartzSystemListener.java:73)
at org.pentaho.core.system.PentahoSystem.createSystemListeners(PentahoSystem.java:389)
at org.pentaho.core.system.PentahoSystem.init(PentahoSystem.java:322)
at org.pentaho.core.system.PentahoSystem.init(PentahoSystem.java:212)
at org.pentaho.core.system.SolutionContextListener.contextInitialized(SolutionContextListener.java:121)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4135)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4630)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:546)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1041)
at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:964)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:502)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1277)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:321)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1053)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:785)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:445)
at org.apache.catalina.core.StandardService.start(StandardService.java:519)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:581)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
* Nested Exception (Underlying Cause) ---------------
java.sql.SQLException: Could not retrieve datasource via JNDI url 'java:comp/env/jdbc/Quartz' org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null'
at org.quartz.utils.JNDIConnectionProvider.getConnection(JNDIConnectionProvider.java:166)
at org.quartz.utils.DBConnectionManager.getConnection(DBConnectionManager.java:111)