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Thread: how to achieve thin driver Connection to oracle XE database?

  1. #1
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    Question how to achieve thin driver Connection to oracle XE database?

    I have been known that there are many ways to connect to any database but I came into problems while trying to connect to Oracle XE database.

    Database is freshly installed on local machine. Connection succeeds when connected via SQL+. Making Java web app access it is what creating trouble here. please look at that code ( I know not formally written and Sorry for that but understoodable.
    String username = request.getParameter("username");
    		String password = request.getParameter("password");
     
    		PrintWriter out = response.getWriter();
    		try {
    			Class.forName("oracle.jdbc.driver.OracleDriver");
    		int pass = Integer.parseInt(password);
            String serverName = null;
            //String sid = null;
            String portNumber = "1521";
            String dusername = "system";
            String dpassword = "honour";
     
            serverName = "localhost";
            String url = "jdbc:oracle:thin:@" + serverName + ":" + portNumber +":xe,'"+dusername+"','"+dpassword+"'";
            Connection conn = null;
     
            conn = DriverManager.getConnection(url);

    last line is where issue happens. Also please look at server console below :
    java.sql.SQLException: Listener refused the connection with the following error:
    ORA-12505, TNS:listener does not currently know of SID given in connect descriptor

    at oracle.jdbc.driver.T4CConnection.logon(T4CConnecti on.java:489)
    at oracle.jdbc.driver.PhysicalConnection.<init>(Physi calConnection.java:553)
    at oracle.jdbc.driver.T4CConnection.<init>(T4CConnect ion.java:254)
    at oracle.jdbc.driver.T4CDriverExtension.getConnectio n(T4CDriverExtension.java:32)
    at oracle.jdbc.driver.OracleDriver.connect(OracleDriv er.java:528)
    at java.sql.DriverManager.getConnection(DriverManager .java:571)
    at java.sql.DriverManager.getConnection(DriverManager .java:233)
    at logger.Logger.processRequest(Logger.java:49)
    at logger.Logger.doPost(Logger.java:27)
    at javax.servlet.http.HttpServlet.service(HttpServlet .java:647)
    at javax.servlet.http.HttpServlet.service(HttpServlet .java:728)
    at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:305)
    at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:210)
    at org.apache.tomcat.websocket.server.WsFilter.doFilt er(WsFilter.java:51)
    at org.apache.catalina.core.ApplicationFilterChain.in ternalDoFilter(ApplicationFilterChain.java:243)
    at org.apache.catalina.core.ApplicationFilterChain.do Filter(ApplicationFilterChain.java:210)
    at org.apache.catalina.core.StandardWrapperValve.invo ke(StandardWrapperValve.java:222)
    at org.apache.catalina.core.StandardContextValve.invo ke(StandardContextValve.java:123)
    at org.apache.catalina.authenticator.AuthenticatorBas e.invoke(AuthenticatorBase.java:502)
    at org.apache.catalina.core.StandardHostValve.invoke( StandardHostValve.java:171)
    at org.apache.catalina.valves.ErrorReportValve.invoke (ErrorReportValve.java:100)
    at org.apache.catalina.valves.AccessLogValve.invoke(A ccessLogValve.java:953)
    at org.apache.catalina.core.StandardEngineValve.invok e(StandardEngineValve.java:118)
    at org.apache.catalina.connector.CoyoteAdapter.servic e(CoyoteAdapter.java:408)
    at org.apache.coyote.http11.AbstractHttp11Processor.p rocess(AbstractHttp11Processor.java:1041)
    at org.apache.coyote.AbstractProtocol$AbstractConnect ionHandler.process(AbstractProtocol.java:603)
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProce ssor.run(JIoEndpoint.java:312)
    at java.util.concurrent.ThreadPoolExecutor.runWorker( ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:744)
    Caused by: oracle.net.ns.NetException: Listener refused the connection with the following error:
    ORA-12505, TNS:listener does not currently know of SID given in connect descriptor

    at oracle.net.ns.NSProtocol.connect(NSProtocol.java:3 99)
    at oracle.jdbc.driver.T4CConnection.connect(T4CConnec tion.java:1140)
    at oracle.jdbc.driver.T4CConnection.logon(T4CConnecti on.java:340)
    ... 29 more
    I identified the issue as the error states but I don't know how to resolve it. I'll be glad if you help me out. please tell me what changes I need to make in my connection string so as to make it work.
    Hoping to have replies from Gurus.
    Thank you


  2. #2
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    Default Re: how to achieve thin driver Connection to oracle XE database?

    Check all the oracle services should start in your machine.

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