Need Opinion About This Design Thread

Hi all,

I am having problem with SQL connection at Godaddy where my pool connection gets MAX OUT. When it happens, I cannot access the database.
This is the thread about the problem: http://forums.asp.net/thread/1665023.aspx

I just created this with "THREAD". I hope someone who has experiences with thread can give me some advice about my design. This is my first time.

 

static object Locked = new object();

public object ExecuteCommand(string queryStr, string type)
{
     //*************************************************************************************//
     // ExecuteCommand: Returns an object //
    //*************************************************************************************//

     Thread t = null;

     lock(Locked)
     {
          SQLString = queryStr;
         
          switch(type)
          {
               case "ExecuteNonQuery":
                   t = new Thread(ExecuteNonQuery);
                   break;
               case "ExecuteScalar":
                    t = new Thread(ExecuteScalar);
                    break;
               case "GetDataReader":
                    t = new Thread(GetDataReader);
                    break;
          }
  
          t.Start();
          t.Join();
     }

     return null;
}

First of, does this work at all? It runs, but is it a good design in term of Thread? Since I use LOCK, do I still need the t.Join() function? The switch with the three cases, is that OKAY? Basically, I'm clueless. If you read my other post, you will get an idea what I'm trying to do. Any feedback would be very very appreciated.

Thank you.