查看oracle数据库服务器的名字

1. select  name  from  v$ database  ;

     #region  从注册表中读取安装主目录的值
         ///   <summary>
         ///  从注册表中读取安装主目录的值
         ///   </summary>
         ///   <param name="setupKey"></param>
         ///   <returns></returns>
         public   static   string  ReadHomeDirectory( string  setupKey)
        {
            RegistryKey readKey;

             try
            {
                readKey = Registry.LocalMachine.OpenSubKey
                    ( " Software\\ORACLE " ,  false );

                 foreach  ( string  name  in  readKey.GetValueNames())
                {
                     if  (name == setupKey)
                    {
                         return  readKey.GetValue(name).ToString();
                    }
                }

                 return   null ;
            }
             catch
            {
                 return   null ;
            }
        }
         #endregion