调试的时候出现错误

这是我调试的时候提示的错误

错误类型：
Microsoft OLE DB Provider for SQL Server (0x80004005)
Cannot open database requested in login '51nx'. Login fails.
/inc/Conn.asp, 第 5 行


以下是代码:


<%
    'dsn="Provider=SQLOLEDB.1;Persist Security Info=False;User ID=lj;pwd=lj;Initial Catalog=mkt;Data Source=."
    dsn="Provider=SQLOLEDB.1;Persist Security Info=False;User ID=sa;Initial Catalog=51nx;Data Source=."
    set conn=server.CreateObject("adodb.connection")
    conn.open dsn  这是第五行
    
    function closeconn()
        conn.close
        set conn=nothing
    end function
%>