java.sql.SQLException: Listener refused the connection with the following error: ORA-12519, TNS:no appropriate service handler found

java.sql.SQLException: Listener refused the connection with the following error: ORA-12519, TNS:no appropriate service handler found at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:412) at oracle.jdbc.driver.PhysicalConnection.(PhysicalConnection.java:531) at oracle.jdbc.driver.T4CConnection.(T4CConnection.java:221) at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:32) at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:503) at oracle.jdbc.pool.OracleDataSource.getPhysicalConnection(OracleDataSource.java:280) at oracle.jdbc.pool.OracleDataSource.getConnection(OracleDataSource.java:207) at oracle.jdbc.pool.OracleDataSource.getConnection(OracleDataSource.java:157) at com.altsoft.dbconnection.PropertyConnectionProvider.getConnection(PropertyConnectionProvider.java:111) at com.altsoft.dbconnection.BasicDAO.connect(BasicDAO.java:230) at com.altsoft.dbconnection.BasicDAO.connect(BasicDAO.java:222) at com.altsoft.siteengine.actions.config.StandardDAOProvider.createConnection(StandardDAOProvider.java:53) at com.altsoft.siteengine.actions.config.DefaultUserDAOProvider.getDAO(DefaultUserDAOProvider.java:43) at com.altsoft.siteengine.actions.BaseAction.getDAO(BaseAction.java:97) at com.altsoft.siteengine.actions.SiteAbstractShowAction.getLanguageWrapper(SiteAbstractShowAction.java:67) at com.altsoft.siteengine.actions.LocaledBaseAction.getLanguage(LocaledBaseAction.java:35) at com.altsoft.siteengine.actions.AbstractShowAction.init(AbstractShowAction.java:45) at com.altsoft.siteengine.actions.SiteAbstractShowAction.init(SiteAbstractShowAction.java:73) at com.altsoft.siteengine.actions.SiteMenuAction.init(SiteMenuAction.java:34) at com.altsoft.siteengine.actions.AbstractShowAction.execute(AbstractShowAction.java:35) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414) at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302) at org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1085) at org.apache.struts.tiles.TilesRequestProcessor.doForward(TilesRequestProcessor.java:263) at org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProcessor.java:398) at org.apache.struts.tiles.TilesRequestProcessor.processForwardConfig(TilesRequestProcessor.java:318) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:241) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414) at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at com.altsoft.siteengine.forms.filters.RequestFilter.doFilter(RequestFilter.java:25) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) at java.lang.Thread.run(Unknown Source) Caused by: oracle.net.ns.NetException: Listener refused the connection with the following error: ORA-12519, TNS:no appropriate service handler found at oracle.net.ns.NSProtocol.connect(NSProtocol.java:385) at oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:1042) at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:301) ... 55 more