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java.lang.ClassNotFoundException: oracle.jdbc.pool.OracleDataSource	at com.sun.enterprise.repository.JdbcConnectionPool.createDataSource(JdbcConnectionPool.java:242)	at com.sun.enterprise.resource.JdbcAllocator.(JdbcAllocator.java:55)	at com.sun.enterprise.resource.JdbcDataSource.getAllocator(JdbcDataSource.java:234)	at com.sun.enterprise.resource.JdbcDataSource.internalGetConnection(JdbcDataSource.java:200)	at com.sun.enterprise.resource.JdbcDataSource.getConnection(JdbcDataSource.java:132)	at db.dbconn.DBConn(dbconn.java:30)	at login.LoginAction.isRegisterLogin(LoginAction.java:56)	at login.LoginAction.perform(LoginAction.java:176)	at org.apache.struts.action.ActionServlet.processActionPerform(ActionServlet.java:1787)	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1586)	at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:510)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:807)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:908)	at org.apache.catalina.core.StandardWrapperValve.invokeServletService(StandardWrapperValve.java:771)	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:322)	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:509)	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:212)	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:509)	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:209)	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:509)	at com.iplanet.ias.web.connector.nsapi.NSAPIProcessor.process(NSAPIProcessor.java:161)	at com.iplanet.ias.web.WebContainer.service(WebContainer.java:586)