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        try    {
            //加载一个Oracle驱动
            DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
            //使用OCI8连接到数据库
            conn=DriverManager.getConnection("jdbc:oracle:oci8:@DatabaseName"+,"user","password");
        }catch(SQLException e)    {    //捕捉SQL违例
            System.out.println("Ora8iConnect在连接oracle8数据库时捕获");
            while (e!=null)
            {    System.out.println("SQLState:"+e.getSQLState());
                System.out.println("Message :"+e.getMessage());
                System.out.println("Vendor  :"+e.getErrorCode());
                e=e.getNextException();
                System.out.println(" ");
            }
            conn=null;
        }
        try    {

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