Hibernate2.1.1
Application Server: j2eesdk-1_4-dr-windows-eval
Data Base: Oracle9i

I have put the oracle jdbc driver jar file(classes12.jar) in the domain lib directory(C:\Sun\AppServer\domains\domain1\lib),
however it still throw ClassNotFoundException. Who can help me solve this problem? Thans!

exception as follows:
java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver
at java.net.URLClassLoader$1.run(URLClassLoader.java:199)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:274)
at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:141)
at com.sun.gjc.common.DataSourceObjectBuilder.getDataSourceObject(DataSourceObjectBuilder.java:190)
at com.sun.gjc.common.DataSourceObjectBuilder.constructDataSourceObject(DataSourceObjectBuilder.java:60)
at com.sun.gjc.spi.DSManagedConnectionFactory.createManagedConnection(DSManagedConnectionFactory.java:68)
at com.sun.enterprise.resource.LocalTxConnectorAllocator.createResource(LocalTxConnectorAllocator.java:139)
at com.sun.enterprise.resource.IASNonSharedResourcePool.createSteadyResources(IASNonSharedResourcePool.java:538)
at com.sun.enterprise.resource.IASNonSharedResourcePool.initPool(IASNonSharedResourcePool.java:234)
at com.sun.enterprise.resource.IASNonSharedResourcePool.internalGetResource(IASNonSharedResourcePool.java:376)
at com.sun.enterprise.resource.IASNonSharedResourcePool.getResource(IASNonSharedResourcePool.java:317)
at com.sun.enterprise.resource.PoolManagerImpl.getResourceFromPool(PoolManagerImpl.java:246)
at com.sun.enterprise.resource.PoolManagerImpl.getResource(PoolManagerImpl.java:139)
at com.sun.enterprise.connectors.ConnectionManagerImpl.internalGetConnection(ConnectionManagerImpl.java:200)
at com.sun.enterprise.connectors.ConnectionManagerImpl.allocateConnection(ConnectionManagerImpl.java:140)
at com.sun.gjc.spi.DataSource.getConnection(DataSource.java:87)
at net.sf.hibernate.connection.DatasourceConnectionProvider.getConnection(DatasourceConnectionProvider.java:56)
at net.sf.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:71)
at net.sf.hibernate.cfg.Configuration.buildSettings(Configuration.java:1091)
at net.sf.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:737)
at com.lfren.joymain.waf.controller.web.MainServlet.init(MainServlet.java:92)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:284)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAsPrivileged(Subject.java:500)
at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:306)
at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:200)
at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:153)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1039)
at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:712)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:188)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:563)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:256)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:210)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:563)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:196)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:175)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:149)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:577)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:149)
at com.sun.enterprise.webservice.EjbWebServiceValve.invoke(EjbWebServiceValve.java:134)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:149)
at com.sun.enterprise.security.web.SingleSignOn.invoke(SingleSignOn.java:254)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:149)
at com.sun.enterprise.web.VirtualServerValve.invoke(VirtualServerValve.java:209)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:149)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:563)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:156)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
at com.sun.enterprise.web.VirtualServerMappingValve.invoke(VirtualServerMappingValve.java:166)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:149)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:563)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:974)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:207)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:648)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:498)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:575)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:649)
at java.lang.Thread.run(Thread.java:534)
|#]

do you have deployment logs? verify classes12 has been deployed